Existing Folders Get Auto-renamed

I had just fully patched yesterday btw, before this occurred.

I created a folder on my desktop, say it was called "temp". I dragged some files into it. I created another folder on my desktop, and named it "whatever". The previous folder, "temp" now renamed itself "whatever (1)" (might have ended in (2), whatever convention Windows uses for auto-renaming)

So I renamed the original folder to "temp".

Likewise when I added a third folder bearing a different name, the first two that I had created this session were auto-renamed to become copies of my new folder name, with number suffixes on them.