Nixpkgs: Thunderbird 78.2.2 rendering issues

[mohe2015]

Describe the bug
Thunderbird 78.2.1 f56bda0c0c6ccdd405398a0ab3a5cbc75aaad405 is working.
master cc4a33d78c0fdfc8d64274179c24d8188153287a (Thunderbird 78.2.2) has rendering issues (see screenshot). Most buttons do not react to clicks and the menu is also not reacting.

To Reproduce
Switch to the mentioned commit and rebuild.

Expected behavior
Normally working thunderbird.

Screenshots

Notify maintainers
@edolstra
@lovesegfault
@nbp

Metadata

 - system: `"x86_64-linux"`
 - host os: `Linux 5.8.8, NixOS, 21.03.20200914.cc4a33d (Okapi)`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 3.0pre20200829_f156513`
 - channels(root): `"nixos-20.09pre242714.a31736120c5, home-manager"`
 - channels(moritz): `"home-manager"`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`

[beardhatcode]

This was also a bug in Ubuntu, it was fixed there with:

https://bazaar.launchpad.net/~mozillateam/thunderbird/thunderbird.groovy/revision/563

https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1895898
https://bugzilla.opensuse.org/show_bug.cgi?id=1176384#c0

[kevincox]

Upstream bug appears to be
https://bugzilla.mozilla.org/show_bug.cgi?id=1664607

[mohe2015]

Btw temporary workaround would be to switch to thunderbird-bin-78 if you are not opposed to binaries