I was wondering if anyone has had any similar problems to me. In my project - using Xojo 2019r2 on Mac, and this also happened with 2019r1 - once in a while certain controls, which were previously functioning as expected, just stop working properly. These include:
1. Me.AcceptFileDrop(MRFileTypes.Any) in Open event
Listbox stops accepting file drops
2. Me.AllowRowReordering = true in Open event
Listbox stops allowing row reorder
Tooltip is set but does not display
These problems occur both running in debug mode and in building the app. The workaround I have is that if I duplicate the problematic control, delete the original control and replace it with the duplicate (renamed to the original name), then it will work again as expected. Until a month or so later when it stops working again!
Very frustrating! I couldn't find any reports of this type of problem in the forum or in the Feedback. Would anyone have any suggestions on how to isolate the issue or ideally fix the recurrent problem? I will open a case in Feedback, but I think that it will just be labelled as issue not reproduceable.