Vivaldi vivaldi-stable 1.3.551.30-1 (64 bit).deb dependency 12.04 LTS
Got a dependency error when installing Vivaldi on Ubuntu 12.04 LTS. Software Center was no help. Had to upgrade libnss3 with Synaptic.
Sorry to say… i fear most testers and Desktop users dont have such very old LTS version.
So this issue might be slipped thru invisibly.
With 14.04 LTS and current 16.x we did not see such problem.