diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 000000000..bab7397a6
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,69 @@
+name: macOS build
+
+on:
+  push
+
+jobs:
+  build:
+
+    runs-on: macos-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Install dependencies
+      run: brew install gtk+3 gtkmm3 gtk-mac-integration adwaita-icon-theme libsigc++ little-cms2 libiptcdata fftw lensfun llvm expat pkgconfig libomp shared-mime-info
+    - name: patch libiconv
+      run: |
+        mkdir libiconv && cd libiconv
+        wget https://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.16.tar.gz
+        tar xf libiconv-1.16.tar.gz
+        cd libiconv-1.16
+        patch -p1 < "${GITHUB_WORKSPACE}/tools/osx/libiconv_1.16_rt.patch"
+        mkdir build && cd build
+        destDir="$(pwd)"
+        ../configure --prefix=/opt/local --disable-static 'CFLAGS=-arch x86_64 -mmacosx-version-min=10.9' 'LDFLAGS=-arch x86_64 -mmacosx-version-min=10.9' CXXFLAGS="-arch x86_64 -mmacosx-version-min=10.9"
+        make --jobs
+        make DESTDIR="${destDir}" install
+        sudo mv opt/local /usr/local/opt/libiconv
+    - name: cmake
+      env:
+        CMAKE_CXX_STANDARD: 11
+        PKG_CONFIG_PATH: /usr/local/opt/libffi/lib/pkgconfig:/usr/local/opt/expat/lib/pkgconfig
+        RAW_THERAPEE_MAJOR: '5'
+        RAW_THERAPEE_MINOR: '7'
+        C_FLAGS: -Xpreprocessor -fopenmp /usr/local/lib/libomp.dylib -I/usr/local/include -I/usr/local/opt/gdk-pixbuf/include -I/usr/local/opt/libiconv/include -I/usr/local/opt/libxml2/include -I/usr/local/opt/expat/include -I/usr/local/opt/llvm/include
+      run: |
+        # GITHUB_REF is the ref that triggered the build, like refs/heads/new-feature - the next line parses that to REF: the branch name only (new-feature)
+        REF=${GITHUB_REF##*/}
+        mkdir build && cd build
+        cmake \
+          -DCMAKE_BUILD_TYPE="release" \
+          -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON \
+          -DCMAKE_EXE_LINKER_FLAGS="-L/usr/local/lib -L/usr/local/opt/llvm/lib -Wl,-rpath,/usr/local/opt/llvm/lib -L/usr/local/opt/gdk-pixbuf/lib -L/usr/local/opt/libiconv/lib -L/usr/local/opt/libffi/lib -L/usr/local/opt/libffi/lib -L/usr/local/opt/libxml2/lib -L/usr/local/opt/expat/lib" \
+          -DCACHE_NAME_SUFFIX="${RAW_THERAPEE_MAJOR}.${RAW_THERAPEE_MINOR}-${REF}" \
+          -DPROC_TARGET_NUMBER="2" \
+          -DPROC_LABEL="generic processor" \
+          -DWITH_LTO="OFF" \
+          -DLENSFUNDBDIR="./share/lensfun" \
+          -DOpenMP_C_FLAGS=-fopenmp=libomp \
+          -DOpenMP_CXX_FLAGS=-fopenmp=libomp \
+          -DOpenMP_C_LIB_NAMES="libomp" \
+          -DOpenMP_CXX_LIB_NAMES="libomp" \
+          -DOpenMP_libomp_LIBRARY="/usr/local/lib/libomp.dylib" \
+          -DOpenMP_C_FLAGS="${C_FLAGS}" \
+          -DOpenMP_CXX_FLAGS="${C_FLAGS}" \
+          -DCMAKE_AR="/usr/local/opt/llvm/bin/llvm-ar" \
+          -DCMAKE_RANLIB="/usr/local/opt/llvm/bin/llvm-ranlib" \
+          ..
+        make --jobs
+        make install
+        sudo make macosx_bundle
+        ARTIFACT=(RawTherapee*.zip)
+        echo "=== artifact: ${ARTIFACT}"
+        # defining environment variables for next step as per https://github.com/actions/starter-workflows/issues/68
+        echo "::set-env name=ARTIFACT_PATH::${GITHUB_WORKSPACE}/build/${ARTIFACT}"
+        echo "::set-env name=ARTIFACT_FILE::${ARTIFACT}"
+    - uses: actions/upload-artifact@v1
+      with:
+        name: ${{env.ARTIFACT_FILE}}
+        path: ${{env.ARTIFACT_PATH}}
diff --git a/rtgui/adjuster.cc b/rtgui/adjuster.cc
index 2267a9fc1..142374213 100644
--- a/rtgui/adjuster.cc
+++ b/rtgui/adjuster.cc
@@ -230,22 +230,7 @@ void Adjuster::setDefaultEditedState (EditedState eState)
 void Adjuster::autoToggled ()
 {
 
-    if (!editedCheckBox) {
-        // If not used in the BatchEditor panel
-        if (automatic->get_active()) {
-            // Disable the slider and spin button
-            spin->set_sensitive(false);
-            slider->set_sensitive(false);
-            reset->set_sensitive(false);
-        } else {
-            // Enable the slider and spin button
-            spin->set_sensitive(true);
-            slider->set_sensitive(true);
-            reset->set_sensitive(true);
-        }
-    }
-
-    if (adjusterListener != nullptr && !blocked) {
+    if (adjusterListener && !blocked) {
         adjusterListener->adjusterAutoToggled(this);
     }
 }
@@ -380,6 +365,9 @@ void Adjuster::spinChanged ()
         if (adjusterListener && !blocked) {
             if (!buttonReleaseSlider.connected() || afterReset) {
                 eventPending = false;
+                if (automatic) {
+                    setAutoValue(false);
+                }
                 adjusterListener->adjusterChanged(this, spin->get_value());
             } else {
                 eventPending = true;
@@ -419,6 +407,9 @@ void Adjuster::sliderChanged ()
         if (adjusterListener && !blocked) {
             if (!buttonReleaseSlider.connected() || afterReset) {
                 eventPending = false;
+                if (automatic) {
+                    setAutoValue(false);
+                }
                 adjusterListener->adjusterChanged(this, spin->get_value());
             } else {
                 eventPending = true;
@@ -459,21 +450,6 @@ void Adjuster::setAutoValue (bool a)
         const bool oldVal = autoChange.block(true);
         automatic->set_active(a);
         autoChange.block(oldVal);
-
-        if (!editedCheckBox) {
-            // If not used in the BatchEditor panel
-            if (a) {
-                // Disable the slider and spin button
-                spin->set_sensitive(false);
-                slider->set_sensitive(false);
-                reset->set_sensitive(false);
-            } else {
-                // Enable the slider and spin button
-                spin->set_sensitive(true);
-                slider->set_sensitive(true);
-                reset->set_sensitive(true);
-            }
-        }
     }
 }
 
@@ -481,6 +457,9 @@ bool Adjuster::notifyListener ()
 {
 
     if (eventPending && adjusterListener != nullptr && !blocked) {
+        if (automatic) {
+            setAutoValue(false);
+        }
         adjusterListener->adjusterChanged(this, spin->get_value());
     }
 
@@ -571,6 +550,9 @@ void Adjuster::showEditedCB ()
 void Adjuster::editedToggled ()
 {
     if (adjusterListener && !blocked) {
+        if (automatic) {
+            setAutoValue(false);
+        }
         adjusterListener->adjusterChanged(this, spin->get_value());
     }
 
diff --git a/rtgui/editorpanel.cc b/rtgui/editorpanel.cc
index 4d4bb8dd6..a6d172d46 100644
--- a/rtgui/editorpanel.cc
+++ b/rtgui/editorpanel.cc
@@ -2073,6 +2073,7 @@ bool EditorPanel::idle_sentToGimp (ProgressConnector<int> *pc, rtengine::IImagef
 {
     img->free ();
     int errore = pc->returnValue();
+    setProgressState(false);
     delete pc;
 
     if (!errore) {
diff --git a/rtgui/thumbnail.cc b/rtgui/thumbnail.cc
index 273980ffe..bf043cf82 100644
--- a/rtgui/thumbnail.cc
+++ b/rtgui/thumbnail.cc
@@ -342,34 +342,31 @@ void Thumbnail::notifylisterners_procParamsChanged(int whoChangedIt)
  * the Preferences).
  *
  * The result is a complete ProcParams with default values merged with the values
- * from the default Raw or Image ProcParams, then with the values from the loaded
- * ProcParams (sidecar or cache file).
- */
+ * from the loaded ProcParams (sidecar or cache file).
+*/
 void Thumbnail::loadProcParams ()
 {
     MyMutex::MyLock lock(mutex);
 
     pparamsValid = false;
     pparams->setDefaults();
-    const PartialProfile *defaultPP = ProfileStore::getInstance()->getDefaultPartialProfile(getType() == FT_Raw);
-    defaultPP->applyTo(pparams.get());
 
     if (options.paramsLoadLocation == PLL_Input) {
         // try to load it from params file next to the image file
-        int ppres = pparams->load (fname + paramFileExtension);
+        const int ppres = pparams->load(fname + paramFileExtension);
         pparamsValid = !ppres && pparams->ppVersion >= 220;
 
         // if no success, try to load the cached version of the procparams
         if (!pparamsValid) {
-            pparamsValid = !pparams->load (getCacheFileName ("profiles", paramFileExtension));
+            pparamsValid = !pparams->load(getCacheFileName("profiles", paramFileExtension));
         }
     } else {
         // try to load it from cache
-        pparamsValid = !pparams->load (getCacheFileName ("profiles", paramFileExtension));
+        pparamsValid = !pparams->load(getCacheFileName("profiles", paramFileExtension));
 
         // if no success, try to load it from params file next to the image file
         if (!pparamsValid) {
-            int ppres = pparams->load (fname + paramFileExtension);
+            const int ppres = pparams->load(fname + paramFileExtension);
             pparamsValid = !ppres && pparams->ppVersion >= 220;
         }
     }
diff --git a/tools/osx/libiconv_1.16_rt.patch b/tools/osx/libiconv_1.16_rt.patch
new file mode 100644
index 000000000..470f7780c
--- /dev/null
+++ b/tools/osx/libiconv_1.16_rt.patch
@@ -0,0 +1,31 @@
+diff --git a/lib/iconv.c b/lib/iconv.c
+index b7a04f8..41c5896 100644
+--- a/lib/iconv.c
++++ b/lib/iconv.c
+@@ -610,5 +610,26 @@ strong_alias (libiconv_open, iconv_open)
+ strong_alias (libiconv, iconv)
+ strong_alias (libiconv_close, iconv_close)
+ #endif
++
++#undef iconv_open
++#undef iconv
++#undef iconv_close
++
++LIBICONV_DLL_EXPORTED iconv_t iconv_open (const char* tocode, const char* fromcode)
++{
++  return libiconv_open(tocode, fromcode);
++}
++
++LIBICONV_DLL_EXPORTED size_t iconv (iconv_t icd,
++                                    ICONV_CONST char * * inbuf, size_t *inbytesleft,
++                                    char * * outbuf, size_t *outbytesleft)
++{
++  return libiconv(icd, inbuf, inbytesleft, outbuf, outbytesleft);
++}
++
++LIBICONV_DLL_EXPORTED int iconv_close (iconv_t icd)
++{
++  return libiconv_close(icd);
++}
+
+ #endif
diff --git a/tools/osx/macosx_bundle.sh b/tools/osx/macosx_bundle.sh
index 2501e936b..3958326e8 100644
--- a/tools/osx/macosx_bundle.sh
+++ b/tools/osx/macosx_bundle.sh
@@ -99,6 +99,7 @@ MACOS="${CONTENTS}/MacOS"
 LIB="${CONTENTS}/Frameworks"
 ETC="${RESOURCES}/etc"
 EXECUTABLE="${MACOS}/rawtherapee"
+GDK_PREFIX="/usr/local/opt/gdk-pixbuf"
 
 msg "Removing old files:"
 rm -rf "${APP}" "${PROJECT_NAME}_*.dmg" "*zip"
@@ -111,13 +112,13 @@ install -d  "${RESOURCES}" \
 
 msg "Copying release files:"
 ditto "${CMAKE_BUILD_TYPE}/MacOS" "${MACOS}"
-ditto "${CMAKE_BUILD_TYPE}/Resources" "${RESOURCES}"
+ditto "Resources" "${RESOURCES}"
 
 msg "Copying dependencies from ${GTK_PREFIX}:"
 CheckLink "${EXECUTABLE}"
 
 msg "Copying library modules from ${GTK_PREFIX}:"
-ditto --arch "${arch}" {"${GTK_PREFIX}/lib","${LIB}"}/gdk-pixbuf-2.0
+ditto --arch "${arch}" {"${GDK_PREFIX}/lib","${LIB}"}/gdk-pixbuf-2.0
 ditto --arch "${arch}" {"${GTK_PREFIX}/lib","${LIB}"}/gtk-3.0
 
 msg "Removing static libraries and cache files:"
@@ -129,50 +130,56 @@ install -d "${ETC}/gtk-3.0"
 # Make Frameworks folder flat
 mv "${LIB}"/gdk-pixbuf-2.0/2*/loaders/*.so "${LIB}"
 mv "${LIB}"/gtk-3.0/3*/immodules/*.so "${LIB}"
+# the print*.so lead to errors when running gtk-query-immodules-3.0, just seeing what the app does without, since they are not in immodules
+# and including them leads to errors and a completely empty gtk.immodules file
+# mv "${LIB}"/gtk-3.0/3*/printbackends/*.so "${LIB}"
 rm -r "${LIB}"/gtk-3.0
 rm -r "${LIB}"/gdk-pixbuf-2.0
 
-"${GTK_PREFIX}/bin/gdk-pixbuf-query-loaders" "${LIB}"/libpix*.so > "${ETC}/gtk-3.0/gdk-pixbuf.loaders"
-"${GTK_PREFIX}/bin/gtk-query-immodules-3.0"  "${LIB}"/{im*.so,libprint*.so}      > "${ETC}/gtk-3.0/gtk.immodules"
+"${GDK_PREFIX}"/bin/gdk-pixbuf-query-loaders "${LIB}"/libpix*.so > "${ETC}"/gtk-3.0/gdk-pixbuf.loaders
+"${GTK_PREFIX}"/bin/gtk-query-immodules-3.0 "${LIB}"/im*.so > "${ETC}"/gtk-3.0/gtk.immodules
 sed -i "" -e "s|${PWD}/RawTherapee.app/Contents/|/Applications/RawTherapee.app/Contents/|" "${ETC}/gtk-3.0/gdk-pixbuf.loaders" "${ETC}/gtk-3.0/gtk.immodules"
 
-ditto {"${GTK_PREFIX}","${RESOURCES}"}/share/glib-2.0/schemas
-"${GTK_PREFIX}/bin/glib-compile-schemas" "${RESOURCES}/share/glib-2.0/schemas"
+mkdir -p ${RESOURCES}/share/glib-2.0
+cp -pRL {"/usr/local","${RESOURCES}"}/share/glib-2.0/schemas
+"/usr/local/bin/glib-compile-schemas" "${RESOURCES}/share/glib-2.0/schemas"
 
 msg "Copying shared files from ${GTK_PREFIX}:"
-ditto {"${GTK_PREFIX}","${RESOURCES}"}/share/mime
+cp -pRL {"/usr/local","${RESOURCES}"}/share/mime
+
 # GTK3 themes
-ditto {"${GTK_PREFIX}","${RESOURCES}"}/share/themes/Mac/gtk-3.0/gtk-keys.css
-ditto {"${GTK_PREFIX}","${RESOURCES}"}/share/themes/Default/gtk-3.0/gtk-keys.css
+ditto {"/usr/local","${RESOURCES}"}/share/themes/Mac/gtk-3.0/gtk-keys.css
+ditto {"/usr/local","${RESOURCES}"}/share/themes/Default/gtk-3.0/gtk-keys.css
 # Adwaita icons
 iconfolders=("16x16/actions" "16x16/devices" "16x16/mimetypes" "16x16/places" "16x16/status" "48x48/devices")
 for f in "${iconfolders[@]}"; do
-    ditto {"${GTK_PREFIX}","${RESOURCES}"}/share/icons/Adwaita/"$f"
+    mkdir -p ${RESOURCES}/share/icons/Adwaita/${f}
+    cp /usr/local/share/icons/Adwaita/${f}/* "${RESOURCES}"/share/icons/Adwaita/${f}
 done
-ditto {"${GTK_PREFIX}","${RESOURCES}"}/share/icons/Adwaita/index.theme
-"${GTK_PREFIX}/bin/gtk-update-icon-cache-3.0" "${RESOURCES}/share/icons/Adwaita"
+ditto {"/usr/local","${RESOURCES}"}/share/icons/Adwaita/index.theme
+"/usr/local/bin/gtk-update-icon-cache" "${RESOURCES}/share/icons/Adwaita"
 
 # Copy libjpeg-turbo into the app bundle
-cp /opt/local/lib/libjpeg.62.dylib "${RESOURCES}/../Frameworks"
+cp /usr/local/lib/libjpeg.*.dylib "${CONTENTS}/Frameworks"
 
-# Copy libexpat into the app bundle
-cp /opt/local/lib/libexpat.1.dylib "${RESOURCES}/../Frameworks"
+# Copy libexpat into the app bundle (which is keg-only)
+cp /usr/local/Cellar/expat/*/lib/libexpat.1.dylib "${CONTENTS}/Frameworks"
 
 # Copy libz into the app bundle
-cp /opt/local/lib/libz.1.dylib "${RESOURCES}/../Frameworks"
+cp /usr/lib/libz.1.dylib "${CONTENTS}/Frameworks"
 
 # Copy libtiff into the app bundle
-cp /opt/local/lib/libtiff.5.dylib "${RESOURCES}/../Frameworks"
+cp /usr/local/lib/libtiff.5.dylib "${CONTENTS}/Frameworks"
 
 # Copy the Lensfun database into the app bundle
 mkdir -p "${RESOURCES}/share/lensfun"
-cp /opt/local/share/lensfun/version_2/* "${RESOURCES}/share/lensfun"
+cp /usr/local/share/lensfun/version_2/* "${RESOURCES}/share/lensfun"
 
 # Copy liblensfun to Frameworks
-cp /opt/local/lib/liblensfun.2.dylib "${RESOURCES}/../Frameworks"
+cp /usr/local/lib/liblensfun.2.dylib "${CONTENTS}/Frameworks"
 
 # Copy libomp to Frameworks
-cp /opt/local/lib/libomp.dylib "${RESOURCES}/../Frameworks"
+cp /usr/local/lib/libomp.dylib "${CONTENTS}/Frameworks"
 
 # Install names
 find -E "${CONTENTS}" -type f -regex '.*/(rawtherapee-cli|rawtherapee|.*\.(dylib|so))' | while read -r x; do