@jfml I can't say I've ever encountered that behavior. But I always save in the same folder, and Krita remembers that location between sessions.
Maybe it's an OS issue? I thought there was a file manager setting somewhere, but I can't find it at the moment.
@Gremriel Mh, I think I had this problem both on Windows and Linux, it's interesting that I can't replicate it, I'll have an eye on it …