Opening a file outside a project does not use LightEdit mode

So since v2020.2, opening a file via the context menu has opened the file in whatever project is already open instead of using LightEdit mode.

Based on the documentation, this should only happen if the file is part of an already open project, but that is not the case.

When I try to open a file when PhpStorm isn't running at all, it opens a blank project with that file in it.

I have made sure the registry option "light.edit.file.open.enabled" is enabled.

I can't find any way to fix this and I want LightEdit back.

Does anyone have any suggestions for how to fix this?