I'm trying to compile mesa myself to test without ccdcf91104a5f07127b5b8d8570b5c4bbcf86647 but it takes time and it's a bit complicated (especially since I'm using multiarch between 64-bits and 32-bits). But I did with a Qt application (vlc) and I do have the bug with Oibaf's ppa and not with Sid's Mesa, so it's very likely the same bug.