Too lot of changes to write it here. Reproducible: Always
Thank you for report Marcin. This problem was already reported, closing as duplicate. *** This bug has been marked as a duplicate of bug 314473 ***
I was searching for similar bug and i got nothing, strange :( Does bug 314473 has always "version bump" at title?
"View Bug Activity" gives the answer. Yes, title was changed only once...
I suppose i didn't search for bug carefully, sorry for noise.