Is your feature request related to a problem? Please describe.
Whenever I use shaders, the end portal shader gets removed, most of the shaders i've tried have custom end portal shaders but they dont work with tesseract

Describe the solution you'd like
Find a way to make them compatible or make it use the vanilla shader even when shaders are on

#88

This seems to be a duplicate of #88, as you have already commented... 🤔