I didn't have enough time to finish bisection today but I managed to narrow it down, so it might already be useful. There are just two untested revisions left. Bad revision is 8894f4919bc43f821775db2cfff4b917871b2102 ebd6acbb068b6558735eb80aabce1e7af9e78e1e 55f083c33feb7231c7574a64cd01b0477715a370 Good revision is 13a61757db124b16cef9b8f9b60ff7337a01b398 I will finish bisecting on Monday.