Steps to reproduce:
1. Start TC with a fresh ini file
2. Go to "Configuration" -> "Options..." -> "Copy/Delete" and untick the option "Use standard copy method (recommended)".
3. Start a queue copy of a large folder by pressing F5, F2.
4. Click on the close button (the x) in the upper right corner of the Queue Copy dialog.
5. You now get a dialog saying "User abort!" with 3 buttons "OK (Stop)", "Cancel" and "Finish copying the current file".
6. Click on any of the buttons has no effect and TC is stuck and can only be terminated by Windows.
It affects both 32bit and 64bit TC.
The bug occurs the first time in TC 10.50b1 and is probably due to this new feature:
history.txt wrote:14.03.22 Added: Show new option "Finish copying the current file" when aborting copying in the middle of a file. Aborts the operation after the currently copied file (32/64)