Same version kind of similar issues (kind of).
Let's tell i load a video. i put markers (i edit in Cut Mode). left click on Save or hit on my keyboard Control+T.
the window open. i click on Save Kepts fragments Separatly, 8 times every 10, the window close and nothing happen.
if i try it again, the program kind of crash.
i must save the project, close the software, reload it, reload the save project with all the marker, hit Control+T and click on save kepts fragments separatly again, i hit enter, and then, it's working !!
after a while and editing several videos, the bug is back. there was no issue of this kind in the previous version ! (trying to find the previous version to reinstall it, but i don't find it).