I don't know whether this is a problem of kwin, plasma, or kactivities, or maybe upstream with Virtualbox.
I've set up a "work" activtiy to better separate it from my private files. In "work" I have to run Windows via Virtualbox. The Vbox control center is linked to "work", and so is the window of the virtual machine it opens. But when I switch the vm window to fullscreen, it appears on my private activity to, of course hiding everything on the concerning virtual desktop and rendering my separation between work and private nearly useless.
Steps to Reproduce:
1. Link Virtualbox to one activity
2. Open a virtual machine, linked to the same activity.
3. Switch to fullscreen (or start it as fullscreen, no difference).
Fullscreen window covers the virtual desktop on all activities.
Window should cover the desktop only on the linked activity.
KDE 4.9.1, Chakra 64bit packages
time to get rid of that special case behavior?
*** This bug has been marked as a duplicate of bug 274931 ***
> time to get rid of that special case behavior?
yeah, it seems to hit more and more cases