I get similar issue with my code and manage to fix it by patching Qt... I'm wondering if the same fix would fix your issue too...
(because I send the fix to Qt to commit, but as I can not reproduce the issue on a minimal project, they say the problem doesn't exist and they do not really want to accept my patch. So it is better if several of us report the same issue)
On our side, the issue was raised only when we use tablet pen + drag & drop. I do not know if it is the same problem for you... (if you were using our mouse, it is more likely that our patch will not fix your issue)
You can download the patch here :
Please let me know if it fix your issue...
Posts made by Sebastien Leon
RE: why QDrag->exec() is crashing on MAC but not on windows version?