Metapad is a nice replacement for Notepad, with a few extra useful features, but don't know if it has the feature you refer to. Likely not, because work in it stopped a while ago. But it is still available. I had used it for some years. Still may in future.

https://liquidninja.com/metapad/

I cannot confirm right now but Notepad was rewritten for Win11. It might have lost that feature.

Just tested. Both the F5 and .LOG technique work on Windows 11 notepad.exe

It still working, I just tested on Windows 11 and Notepad.

You can always use Autokey/autohotkey to get this functionality in any software you may want.