Looks like this has been fixed now: https://bugzilla.mozilla.org/show_bug.cgi?id=1353319 https://bugzilla.mozilla.org/show_bug.cgi?id=1353319 If you grab Night

Looks like this has been fixed now: https://bugzilla.mozilla.org/show_bug.cgi?id=1353319 https://bugzilla.mozilla.org/show_bug.cgi?id=1353319 If you grab Nightly (I've been using it for a year now for frontend development and my normal browsing and it's just fine) you can test it.