When I turned the beta feature “Incremental typechecking and autocompletion in studio” on, autocomlete broke for me.
As you can see in the top video linked, autocomplete is totally messed up in specifically elseif conditional statements.
As you can see in the 2nd linked video, autocomplete no longer works on direct requires.
I have to set a variable to the required module, then autocomplete that variable.
Autocomplete works perfectly fine when I turn off the beta feature.