On Sun, 2020-04-26 at 18:36 -0700, ToddAndMargo via users wrote:
As soon as I exited the krusader window inside the stick, I could unmount
That kind of thing has been an annoying bug for ages. You have file browsers that have right-click options allowing you to unmount something from their directory tree. Yet, when you try to use it, it fails (usually because that directory is being shown in the adjacent panel).