I found a strange bug while playing with card windows on Windows 10 (tested on both 32 and 64b versions) :
I have a card windows where users can add documents.
When the card is opened without defining a window name, once you've added a doc, your stuck in the card !
Both legacy close button or "close window" step won't be able to close the window.
Using debugger, if you go twice on "close window" step, fmp will crash !
As a workaround, I found that defining a window name for the card window solve the issue. That may help you in your investigations.
NB : this bug is not present on macOS
You'll find a demo file that reproduce the bug in attachment :
- Clic on "add" button
- Drag and drop or insert a file
- Try to close the card
FileMaker Pro Advanced 18.104.22.168
Windows 10 Pro up to date (1703 - 15063.413)