It is not possible to work with krusader when a copy is in process.
I am using now Debian 10 and before in Debian 8 everything worked fine.

Before it was possible to make a large copy and to delete files in another tab.
There was an easy way to select files for a copy and to put them in a task list.

This all has gone.
Deleting small files take much time and you must wait for it - why?
The krusader is opening the copy window in the background and you have to get it in the foreground now manually - why?

This features where very handy and i can't see new features that makes it easier to work with the krusader.
Krusader is a very great tool - please don't make a less usable tool out of it.