(In reply to Paul Tannington from comment #5) Do you find related information sources interesting? * segfault in DoDatabaseWork (this makes Firefox 71 to crash at startup) https://bugzilla.mozilla.org/show_bug.cgi?id=1601707 * Firefox 71.0 crashes when build with PGO https://bugzilla.redhat.com/show_bug.cgi?id=1779082