In Minecraft 1.16.100.50 and 1.16.100.51, we cannot activate any resource pack(shaders, texture packs etc.).

The game will crash if we activate it.

In 1.16.100.50 we cannot activate texture pack, it will crash at next startup. But in that version we can activate shader.

In 1.16.100.51 we cannot activate any pack, it will crash when we activate it. We must remove the pack's directory make the game start normally.

I tested in Windows 10 2004 version, and My phone(android 8.1). They got the same result.

Note: When I roll-back to version 1.16.20.54, it works no crash. 

I uploaded a video about crash, please watch it.

thanks.