QmlProfiler: Switching to Help on error makes QC unusable

Steps to reproduce:

• start QC (I've used clean settings, at least a Qt5.4 kit configured)
• create Quick Application from template (I've used Quick 2.3 without Controls)
  • follow steps until Editor is opened with the qml file
• create a Qt Console Application from template
  • follow steps until Editor has opened the main.cpp file
• switch back to the main.qml
• switch to Analyze mode
• start profiling
  • should fail, as current project is the Qt Console Application
• when message box comes up with failing to connect to the in-process QML profiler (Help, Cancel, Retry)
• click Help
  • QC switches to Help to the respective help page, but...

Current result:

• QC cannot be used - all UI items seems to be not responding anymore (as if there's a modal dialog still open)
• all menu items are greyed out - none are usable

Note: You can still trigger some short cuts, e.g. triggering the short-cut for the Options dialog brings up the dialog and makes QC usable afterwards again.