Version: (using Devel)
Installed from: Compiled sources
No desktop effects, it happens when starting Konqueror in tab mode, not sure since when.
See attached screenshot
Created attachment 27700 [details]
konq statusbar and scrollbar is showing other tab content
I also see it quite often, especially when letting the crash recovery thingie recover.
I've also had this happen, usually when I load a view profile which has multiple tabs saved. I open a clean Konqueror instance, nothing wrong with statusbar, then Load View Profile, and then it becomes like that. opening or closing tabs doesn't consistently make it go away.
I believe the problem is that the KHTML part renders before the statusbar and scrollbar appear. This makes the KTHML part think that it can draw over a larger area than it really can.
There is a testcase for that in bug 171508 if you are interested... :)
*** This bug has been marked as a duplicate of bug 171508 ***