See the default profile : https://share.firefox.dev/3BiwQ7E Notice that only "cdpn.io" and "CanvasRenderer" are visible. Now, enable all the threads. You will see that there is heavy jank on the "Renderer" thread. See the profile: https://share.firefox.dev/3PmXbHP ER: If a thread is so heavily janked, it should be visible by default.
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See the default profile : https://share.firefox.dev/3BiwQ7E Notice that only "cdpn.io" and "CanvasRenderer" are visible. Now, enable all the threads. You will see that there is heavy jank on the "Renderer" thread. See the profile: https://share.firefox.dev/3PmXbHP ER: If a thread is so heavily janked, it should be visible by default (atleast for all "graphics-y" threads)