macdeployqt does not bundle QtDBus

Hi, 
I am trying to bundle a qt application on macOS. 

My problem is reproducable with the example project from macos-deployment

 
This tutortial uses the plugandpaint example.
Steps: 

cd qtbase/tests/manual/examples/widgets/tools/plugandpaint
mkdir build && cd build
cmake ..
make -j2
# everything compiles fine, the binary resides in 
# ./app/plugandpaint.app/Contents/MacOS/plugandpaint and is executable

macdeployqt app/plugandpaint.app

# Now, QtWidgets and QtGui reside in 
#./app/plugandpaint.app/Contents/Frameworks

brew unlink qt6

./app/plugandpaint.app/Contents/MacOS/plugandpaint

This fails with 

dyld[53046]: Library not loaded: @rpath/QtDBus.framework/Versions/A/QtDBus
  Referenced from: <FB742F7D-2B2A-3B21-8102-B1F427D38DDC> /Users/username/Dev/qtbase/tests/manual/examples/widgets/tools/plugandpaint/build/app/plugandpaint.app/Contents/Frameworks/QtGui.framework/Versions/A/QtGui
  Reason: tried: '/Users/username/Dev/qtbase/tests/manual/examples/widgets/tools/plugandpaint/build/app/plugandpaint.app/Contents/Frameworks/QtGui.framework/Versions/A/../../../QtDBus.framework/Versions/A/QtDBus' (no such file), '/Users/username/Dev/qtbase/tests/manual/examples/widgets/tools/plugandpaint/build/app/plugandpaint.app/Contents/Frameworks/QtWidgets.framework/Versions/A/../../../QtDBus.framework/Versions/A/QtDBus' (no such file), '/opt/homebrew/lib/QtDBus.framework/Versions/A/QtDBus' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/opt/homebrew/lib/QtDBus.framework/Versions/A/QtDBus' (no such file), '/opt/homebrew/lib/QtDBus.framework/Versions/A/QtDBus' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/opt/homebrew/lib/QtDBus.framework/Versions/A/QtDBus' (no such file)
[1]    53046 abort      ./app/plugandpaint.app/Contents/MacOS/plugandpaint

Which makes somewhat sense: QtDBus is not copied to 

./app/plugandpaint.app/Contents/Frameworks

I assume, because it is not directly needed by the App. But it is linked from QtGui.