Created attachment 420139 [details] testcase 1 STEPS TO REPRODUCE: Load testcase EXPECTED RESULTS: There should be two blinking rects. ACTUAL RESULTS: The orange rect (a <use> clone of the other one) disappears, and then never blinks back.
Created attachment 420141 [details] testcase 2 Here's a simpler testcase -- here, the rect has style="display: none", and there's an animation that immediately takes effect to counteract that. However, the lower rect (the cloned one) is still missing.
Created attachment 420142 [details] reference case 2 (using 'visiblity' instead of 'display') Here's a reference case for testcase 2. The only difference vs the testcase is that I use 'visibility' instead of 'display', and that fixes the bug.
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