if I am not mistaken, this is probably the Firefox issue that Moved to ryan@social.bnry.lol (npub1xa9…5pyn) is looking for: https://bugzilla.mozilla.org/show_bug.cgi?id=1896457
As for Electron-based apps, I'm not sure if they're still affected, presumably yes? Julian Sparber (npub16d8…0x8u) made specific recommendations in https://github.com/electron/electron/issues/18445#issuecomment-1969501323 but we never got any reaction from Electron devs 🤷