I had this problem too, until I upgraded some packages to their version in experimental. If I had to make a guess, I think it's kde-runtime, but since I now have quite a number of packages from experimental, I'm not sure.
So the good news is that a fixed version is available and packed for Debian. The bad news is that due to the current migration of gcc-5 it may take a while before those packages hit unstable and later testing.
signature.asc
Description: This is a digitally signed message part.
