I believe the composites are triggered by gradient animation around the "Dive deeper in AI Mode" button. However, this button is offscreen. So I think the Firefox bug here is that, with the WebRender `sw_compositor`, we end up compositing even if the changes only affect clipped-out tiles.
Bug 2033282 Comment 6 Edit History
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I believe the composites are triggered by the gradient animation around the "Dive deeper in AI Mode" button. However, this button is offscreen. So I think the Firefox bug here is that, with the WebRender `sw_compositor`, we end up compositing even if the changes only affect clipped-out tiles.