Created attachment 8785732 [details] Testcase User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:43.0) Gecko/20100101 Firefox/43.0 SeaMonkey/2.40 Build ID: 20160120191716 Steps to reproduce: See the testcase. Actual results: videoElement.textTracks.length changes from 2 to 0 after DOM manipulation. Expected results: Moving the video element should preserve its textTracks.
Lets mark this as a P1 because it appears to be broken.
Priority: -- → P1
Latest nightly pass the testcase. And I believe I had fix it, bug 1242594.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 2 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 1242594
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