Could you try to open Registry Editor and navigate to “HKEY_CURRENT_USER\Software\Roblox\RobloxStudio\LayoutSettings\Docking\3”, can you then click the Docking folder and press delete to delete that key (and all of its subkeys, which is 3 in this case) and see if the issue persist or not?
If you run into this again, would be appreciate if you could go to that registry path and copy the content of the entries inside the “3” folder and DM me those. That would help us better root cause this issue. Thank you!