QAction::eventFilter: Ambiguous shortcut overload: Ctrl+0
Running the Qt 5.4 webengine or webkit tab browser example you can see that you should be able to Zoom in/Zoom out and Zoom reset a page.
Pressing Ctrl and + you Zoom In Pressing Ctrl and - you Zoom out Pressing Ctrl and 0 you Zoom reset
All work except Ctrl and 0 to zoom reset. The failure message is: QAction::eventFilter: Ambiguous shortcut overload: Ctrl+0
Since this doesn't work on the actual QT examples what could be done to get it working?
Please create a bug report at bugreports.qt.io next time to make devs aware of such things.