Description:
Used Thunderbird 91.3.0-1 as usual. Just clicked one link in HTML-formatted email and system totally freezed, only holding down power button helped... Discovered also, that no keyboard raw mode is not enabled by default - so, could not try to reboot in a nice way.

Additional info:
* package version(s): Thunderbird 91.3.0-1, thunderbird-i18n-et 91.3.0-1

journalctl -b -1 -p err

Process 3460 (thunderbird) of user 1000 dumped core.

Found module /usr/lib/thunderbird/thunderbird with build-id: f7e84ada68f111d8f9c193bb3be73f16f82fed6f
Found module /usr/lib/libasound.so.2.0.0 with build-id: 9288c92ff737b1999761df2018fcd0e7cbf46d5a
Found module /usr/lib/libbotan-2.so.18.18.2 with build-id: 677b031ff05e715d2ae71a4fa9724d6b2d30de0a
Found module /usr/lib/thunderbird/librnp.so with build-id: 0a672bc050875c9233cadf2a82310152819a8115
Found module /usr/lib/libnotify.so.4.0.0 with build-id: 8fad144d33915b1a1ed751381093ca2bbc650e31
Found module /usr/lib/libnss_mymachines.so.2 with build-id: e7e82c2dd93253d661770d39cc72fe265ba89aac
Found module /usr/lib/libnss_resolve.so.2 with build-id: c78fbf154f223055f7929ffc9eba0155552b68fe
Found module /usr/lib/libnss_myhostname.so.2 with build-id: cb9a40a245a69be2bae4412813e60ca53f00315a
Found module /usr/lib/libcanberra-0.30/libcanberra-pulse.so with build-id: 400935cdf7789421d57f39ccd113eec132edf>
Found module /usr/lib/libcanberra-0.30/libcanberra-multi.so with build-id: b387b5d7a6e23d0e79c185dbb9ed60ef960af>
Found module /usr/lib/libcanberra-0.30/libcanberra-alsa.so with build-id: 118acd4a3e02f5ab369d930792e5ce9007f2de>
Stack trace of thread 3460:
#0 0x00007f282e86e702 n/a (n/a + 0x0)



Steps to reproduce:
Not sure, whether it can be reproduced as it happened very unexpectedly. But you can test with HTML-formatted emails and by clicking hyperlinks. I used Brave browser but journal log didn't have any error about Brave, only Thunderbird. Using EndeavourOS (rolling release) with KDE and all updates done.