topic Re: Firefox started crashing regularly after update to 157.0.1 in Discussions

Firefox started crashing regularly after update to 157.0.1

shinygw — Sun, 11 Oct 2026 16:51:51 GMT

Firefox started crashing regularly after update to 157.0.1 .
The crashes all report
webrender::render_api::window_size_sanity_check
.

This hasn't happened in a long time (been using FF as primary browser for the last 10+ years).
I couldn't find a recent bug with this signature.

After restart I am mostly able (around 10 out of 15 attempts) to restore all tabs without a new crash in the next 5 minutes.

Some crash ids:
https://crash-stats.mozilla.org/report/index/6c4f6748-48c9-45fc-9ce8-d20bf0261008
https://crash-stats.mozilla.org/report/index/bp-97bd5d46-66db-4569-b012-7f6aa0261008
https://crash-stats.mozilla.org/report/index/bp-ddecb8c5-3737-4df0-a4f1-d07be0261011
https://crash-stats.mozilla.org/report/index/bp-9e3c39d7-251e-41fd-a7fa-819500261011

What could I do?

siffemcon — Sun, 11 Oct 2026 22:27:51 GMT

Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1705002. It is fixed in v158 being released this Tuesday.

dftf — Mon, 12 Oct 2026 10:03:59 GMT

That ticket: "Opened 5 years ago (2021-04-14)" 😲

And Mozilla wonder why people are hostile towards UI changes when actual bugs take 5 years, 6 months to fix! 💀

MultiKoopa — Sat, 17 Oct 2026 17:33:02 GMT

Yeah, I'm on 158, bug is NOT fixed.

shinygw — Sat, 17 Oct 2026 17:36:33 GMT

Interestingly, for me it no longer crashes with FF 158 .