Minecraft 1.16.4, only using tweakeroo and malilib with fabric.
I previously used only Optifine, and then only Sodium, and I tried to use Sodium with tweakeroo and malilib. Then this issue happened. I remove Sodium from the mods folder and tested FreeCam again (only tweakeroo and malilib). It didn't work.

I deleted optionsshaders.txt but that does nothing.
Is this normal?
How do I fix this?

The main point of the Free Camera feature is that it gives you a freely movable camera perspective, while the actual player stays in place. And the chunk loading is based on the player's position on the server side. So yes this is intended.