Created attachment 8862793 [details] Screenshot_OptionButton.jpg Steps to reproduce 1. Visit youtube.com 2. Each video with an option button(:) in the far right. Tap an option button. Expected result - It will pop up an option menu "Not interested / Add to Watch Later ／ Cancel" Actual result - It does not pop up an option menu "Not interested / Add to Watch Later ／ Cancel" - This issue cannot be reproduced in Chrome (Mobile) Attachment - Screenshot_OptionButton Device － Sony Z3C (Android 4.4.4) Firefox － 50.0a1 (2017-04-25)
Sorry, the version is 55.0a1 (2017-04-25).
platform-rel: --- → ?
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