Deleting breakpoint after mixed debugging does not work

Steps to reproduce:

• create a Qt Quick Application (doesn't matter which Qt Quick/Controls version)
• set breakpoint in cpp and qml file (both should be able to get hit)
• enable QML debugging on Project view (run settings)
• start debugging
• interact with the app - when hitting a breakpoint hit continue (do so until app finishes)
• right click on one of the breakpoints inside the Breakpoints view and select 'Delete All Breakpoints'

Current behavior:

• breakpoint from qml file gets removed, breakpoint inside cpp file stays
• triggering this again or by explicitly right clicking on this breakpoint and chose 'Delete Breakpoint' does not do anything
• clicking onto the breakpoint marker left to the editor widget (of the cpp file) does not remove the breakpoint
• you have to restart Creator to get rid of this breakpoint (but if you start the last session you'll still have it)