YouTube's management UI's performance in Firefox has been terrible since the Polymer migration (a baffling choice since Polymer was already clearly a failed ini

YouTube's management UI's performance in Firefox has been terrible since the Polymer migration (a baffling choice since Polymer was already clearly a failed initiative when they undertook that migration) and looks like it will never be fixed. Hangouts-in-Gmail has had a memory leak in Firefox for more than a year eventually freezes its tabs. When you're a monopoly, you can get away with a lot.