Being one of the ZetaOffice (and LibreOffice) hackers, I use Firefox as my primary browser. And I really don't like using software only Google knows how to support (=> Chromium). Sometimes I even think about migrating to SeaMonkey

But for example, you unfortunately can't properly debug multi threaded WASM code in Firefox.

https://bugzilla.mozilla.org/show_bug.cgi?id=1589908

Have a look at the Firefox developer tools' debug tab with this page opened. And it will list the threads (web workers) named with some randomized UUID. Impossible as a daily development driver :-/

https://zetaoffice.net/demo2.html

Chromium's Sources tab properly shows each thread's name. So I can easily spot "em-pthread_1" which contains the LibreOffice main thread.

But have a look at this line and you'll spot some extra code I added for running in Firefox :-)

https://github.com/allotropia/zetajs/blob/8258649a7b98fd6af9...

If you have an idea for how to fix a Firefox specific problem, please file an issue and I promise to check if we can integrate the fix.