Important patch if you have glibc >= 2.27, Linux < 5.3 and KF 5.88

[Albert Astals Cid]

I guess it's not a super common combination, but if you have it, you need 

https://invent.kde.org/frameworks/kio/-/commit/aef544ebbb11e842209f3b071eaa9d1c2f26fa40

Otherwise copying files between different filesystems will fail.

Cheers,
  Albert