ZDoom

Fix was now confirmed.

I think it's a duplicate of this: https://github.com/coelckers/Raze/issues/627
If so, it's fixed - but this cannot be verified from a savegame where the projectile is already stuck.

For what that's worth, I don't recall ever seeing this before, but I got another occurrence of this same bug on the same map when going to a different room...

https://cdn.discordapp.com/attachments/674163641934807050/935172585862361139/unknown.png

I have seen the same thing once, too. The projectile is stuck in a logic loop - it cannot move but it also cannot die.
Unfortunately Exhumed's projectile code is in a class of its own - it's an utterly obtuse mess I simply do not understand. I cannot even say if this bug is our own doing or something original because it seems to be very rare to get this, which makes it hard to test.

I don't know if this is a map bug or an engine issue or what, but while playing [url=https://www.moddb.com/games/powerslave/addons/forgotten-sanctuary/]this map[/url] on the latest version of Raze (1.4.0), I ran into a very strange issue:

[youtube]hGIN0EZSiAE[/youtube]

[url=https://cdn.discordapp.com/attachments/520925201937072147/935167607177347112/save0001.zip]Here[/url] is the relevant savegame.

Hope it helps, figured I'd report it anyway even if I'm unsure on the exact nature of this bug, maybe it's just a map issue.