CopyTransformFromGameObjectcs.cs typo?

Is the extra 'cs' here a typo or to avoid some kind of name conflict?
When you Add Component, it's the filename that appears, not the classname.
It was the same in 0.17.

 

I get the same in 50.1.

I deleted my entities packages from project cache, system cache and the original compressed npm ones to force redownload and it's still called CopyTransformFromGameObjectcs.cs.
Have you got a hash for the original npm package.tgz or a direct link?

This is the download line from the upm.log file today

and the downloaded file matches exactly that size.

PS. In case this is my fault (borking this filename looks like something I could've done and forgotten about as I've messed with hybrid transform a lot), I still couldn't explain how that's the name inside the just downloaded compressed npm package.

Edit--updated picture