This happened to me with two different mods:
Rain and this project of mine.
Steps to reproduce:
Spoiler: With Rain
Spoiler: With my modIn both scenarios it should crash GZDoom.
I think this might have something to do with sprites/textures, because when I tried to make my file smaller and I deleted the sprites, the crash didn't happen.
It only happened with those sprites.
The crash also didn't happen in OpenGL.
Sidenote: My project was not meant to be uploaded anywhere on the internet. I am just uploading it here as a way to reproduce the crash.
The project uses ripped sprites from an old game and it will be removed once this is either fixed, or flagged as user error.
I can't remove the sprites from the project, as they are needed to reproduce the crash.
If necessary, I'll remove this link and send this project in a PM to a developer.
Edit: It seems this might be a duplicate.
I deeply apologize for not checking the forums thoroughly.