Commonly, studio will incorrectly auto indent on new lines. This has happened when adding members to a table and standard variables. The bug only recently started happening, a few hours ago.
E: It also happens when indenting above a function.
I am able to consistently reproduce this by moving on to a new line on any script, in any place. To fix, change indentation settings to relative instead of absolute.
i5 9600k, RTX 2060 SUPER