Mod Loader: Fabric
Minecraft Version: 1.21.3
Litematica Version: 0.20.1
Malilib Version: 0.22.2

I use vulkanmod, which changes the minecraft render engine. All litematica functions work, even highlighting areas, but only ghost blocks are not visible (but chests are visible) and it has terrible z-flickering. I think that the problem is most likely in vulkanmod and I have already written an issue in its repo, but what if there is something with litematica?

also if you disable 'Indirect draw' in optimizations of vulkanmod, you will get this:

That's a compatibility issue with Vulkan mod, and whatever changes that they did to the LWGL library

It used to simply crash the game before, so this is an improvement for vulkanmod .