[kde] "wrong" workplace order when dragging windows [gone]

[obrut<-]

hi everyone!

i just noticed, when dragging windows to another workplace the arrangement of workplaces is "wrong". normally, when i drag a window horizontally over the edge of the current workplace the window arrives on the workplace left (or right) of the current one. for example when i drag it from workplace 1 to the right it arrives on workplace 2. now it doesn't arrive on number2 but on number 3 in fact!
when i use 6 workplaces and i drag a windows horizontally to place it on workplace 2 it cycles this way: 1 -> 3 -> 5 -> 1 and so on. that's kind of weird. the correct order is 1 -> 2 -> 3 -> 1 and so on.

i can't say, when this started, but it must have happened during the last weaks.
kde is installed via split ebuilds, it's the newest one in stable amd64.

does anybody have an idea how to fix this? it's not really a big problem but irritating.

edit:
after a reboot the problem is gone.
unfortunately a relogin wasn't enough.