Background image can not be changed - plasma crashes. intel graphics card, Kubuntu 17.10 (latest updates to current date). There is another KDE session on X server opened on another tty, this happens on wayland one (not sure if that can affect wayland).
Concurrent login to two sessions under the same user is not supported.
Hi Martin, sorry I did not mention it in previous comment, but session on X org is opened for different user. Thanks. regards, peter
crash information attached
Created attachment 109351 [details] crash information
I tried with X org session instead of wayland (same setup as previously - another X Org session for another user was opened) and it worked.
*** This bug has been marked as a duplicate of bug 381630 ***