rakslice
commented
6 years ago It seems that the region where the drop is recognised is positioned incorrectly in high DPI mode; a workaround is to disable the default high DPI scaling by going to BasiliskIIGUI.exe Properties -> Compatibility and setting Override high DPI scaling behavior: Scaling performed by to Application, but of course this may make the text unreadably small
I've found that file drag and drops aren't recognised when the BasiliskIIGUI window is on my secondary monitor which is running at a higher DPI. I don't have an idea of what the underlying issue is at the moment.