I've removed several mods related to rendering to see if that was the cause, but I have not figured out why this is happening. Is there a mod causing this I can't see? Singleplayer and multiplayer
https://pastebin.com/raw/1NG4h4nh

I've confirmed it works without my mods, but I want to know which mod it is.

Unfortunately the crash doesn't say which mod causes this. Somehow there is an issue with how steam is rendered, but I don't see why another mod would influence steam rendering.

@Technici4n The cause was Colormatic.