I tried the attached apitrace, but the segfault most likely occurs because of the trimmed apitrace: the crash is because there is no index buffer bound in one of the glDrawRangeEelements, which results in interpreting the offset as a pointer and segfaults. It is *very* unlikely that this is the bug from the original report, as it should have no side effects besides a segfault of the game. Could you try to create an untrimmed apitrace which reproduces the issue and upload it somewhere?