Steps to reproduce:

• have an Android device connected and setup to be able to run/debug
• create Qt Widget App, assign an Kit supporting Qt/Android
• inside the ui file add a QPushButton, and add a connection from the clicked signal to a function with some code (I've just used some qDebug output there)
• place a breakpoint into the added function
• start debugging
• trigger the breakpoint ("click" the button on the device)
• after having stopped at the breakpoint, remove it
• "click" the button again

Current result:

• debugger seems to try to hit the breakpoint again, message box regarding SIGTRAP on the inferior comes up
• cannot continue debugging

Note: Seems also happen (a bit differently, but almost the same result) when removing the breakpoint and re-adding it before proceeding.