Hi! I too have been driven crazy by this for years. It happens for me in Windows Explorer, whether I am navigating a Dropbox file structure or one solely on my computer (i.e., not synced to another service).
I found a solution on this site: https://www.tenforums.com/general-support/21198-file-explorer-rename-name-select-delay-interrupts-edit.html and so far it is working for me. Unfortunately (or fortunately) it requires you to stop using Windows Media Player.
- Go to control panel and search for "windows features"
- You should see something called "turn windows features on and off" -- click on that
- There should be a pop-up window with a directory-style interface (see picture)
- Uncheck "Media Features"
- Probably restart
For good measure, I also uninstalled Windows Media Player. I did not test this before uninstalling WMP.
It's not a real fix but I am happy to use different players in exchange for relief from this editing curse.
Thanks so much!!