This concerns Android only, no problem on PC.
I assume the abrupt end of path drawing is caused by confusion with doubleclick.
Mapper Version: 0.8.1
Operating System: Android 7.1.1, Samsung S Pen
Successfully replicated the bug.
Looks like the above fix works but I'd like to make a more thorough root cause analysis before placing a pull request.
I have not experienced the faulty behaviour any more. Is the code incorporated?
Nope, the code change never made it into Mapper. However, I suspect the bug disappeared due to a Qt upgrade. After all, it is Qt which collects the input events and interprets them for the application.
At this point, I suggest closing the ticket and reopening it in case the issue resurfaces. Thanks!