As a programmer when I see their changes so far, it doesn't look like anything that would affect your savegames. So I think it's pretty safe to say that your savegames will continue to work.
You know what I struggled with this to, eventually I did manage, it's a timing issue. Try moving backwards almost simultaneously with pressing the button. Also you can just hold the move backwards key down. But yeah a fraction more time for this would be nice. I could only solve this by moving back...
Ah, thanks for the report. This seems to be a different bug with sort of similar symptoms. No problem, it seems either some sort of collision check failing or the shield drops on the floor, but gets pushed to the edge, which then collides with the door and gets pushed behind it (since there's an em...
Just noticed you added a fix for the door throw thing. One of the cases that I noticed is that level 1 (or level 2) door with the sun on it. I was able to toss a skeleton's shield through the door.