How the crash happened:

0) Firefox is already open with a few tabs.
1) Click on a link in VS Code.
2) Firefox crashes
3) The crashreporter of firefex pops up.
4) Click on "Send to Mozilla".
5) Crash.

Here is the crashreport of Firefox: https://crash-stats.mozilla.org/report/index/b6952db2-9983-4f67-b51c-f03a60190727#tab-details
I send it manually via about:crashes because the crashreporter is crashed.

VS Code is installed as a snap by the way.

$ snap list
Name               Version       ...