Looks like 1554527 STR: 1. Install https://addons.mozilla.org/en-US/firefox/addon/twitter-container/ 2. Login to Twitter 3. Click into the "What's happening" box 4. Click on the emoji selection smiley :) What happens: Very slow loading of Emojis, Firefox begins to jank and is very slow. Expected result: Fast loading of the Emoji panel.
Bug 1554567 Comment 0 Edit History
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Looks like 1554527 STR: 1. Install https://addons.mozilla.org/en-US/firefox/addon/twitter-container/ 2. Login to Twitter 3. Click into the "What's happening" box 4. Click on the emoji selection smiley :) What happens: Very slow loading of Emojis, Firefox begins to jank and is very slow. Expected result: Fast loading of the Emoji panel. Profile: https://perfht.ml/30Ona18