Crazy isn't it.
It was driving me nuts so much so that I have switched to a third party file explorer called One Commander.
Pros
It's stable and works as expected.
Cons
It doesn't fully replace File Explorer in all apps save dialogs.
But its downsides are more than made up for with the customisation you can do with the layout.
Hope this helps. I'm not expecting a fix from Microsoft since they don't even seem to acknowledge that users are experiencing this bug. A buggy File Explorer is completely out of character for Windows and Microsoft. It's such a core component of a productive operating system. I expect better.