Hey,
this issue affects the "Salt & Chlorine" mod and Wolframite from the "Tungsten" mod in combination with YARM.

I already created a bug report there, but it seems to be an issue with YARM:
https://mods.factorio.com/mod/bzchlorine/discussion/63cc169a0693c0cbb8ea1080

When i add both patches to YARM, one of them gets deleted from the list.
There are close to each other (~10 tiles space), but scan without issues.

No issue with my other patches.

Here is the save file:
https://www.file-upload.net/download-15081078/bug.zip.html

The Salt / Wolframite patch is right around you for testing/debugging.

Thanks for your effort ^^

If they get the same auto-name, whichever is later will overwrite the earlier. Rename it before scanning the other patch, they should both survive.

Sorry, I'm not really maintaining my Factorio mods anymore, I just logged in to deal with a pull request.

Thanks for the info, i will try it, when i play it again ^^
Sad to hear that you no loner maintaining your stuff, but as long as it is open source, anybody can fix it :)

open source, anybody can fix it

That's my reasoning exactly! :)