1341638 - Unable to play vtt video by clicking inside the video area when close caption menu is active

Status: RESOLVED WONTFIX

(Toolkit :: Video/Audio Controls, defect)

Description

[Timea Zsoldos [:zstimi/tzsoldos], Desktop Release QA]

[Affected versions]:
 Fx 52.0b8 
    51.0.1 

[Affected platforms]:
 Windows 8.1 x64
 Ubuntu 16.04 x64
 Mac OS X 10.11

[Steps to reproduce]:
 1. Open Firefox.
 2. Go to "https://people-mozilla.org/~ralin/vtt/".
 3. Click on the CC button.
 4. Click start button from inside video to play it.

[Expected result]:
 The video should start to play.

[Actual result]:
 The video does not play.

[Regression range]:
This is not a recent regression, it reproduces on old Nightly (2016-06-24) when CC was first introduced, build id=20160624030212.

Bug 887934 - Add closed caption button to video control. r=jaws

[Notes]: 
Gif with the issue: http://imgur.com/a/NFf1J

Comment 1

[Astley Chen (inactive)]

Looks like the mouse event is captured when CC window pops up and released when window is gone.
Ray, ideas ?

Comment 2

[Ray Lin[:ralin]]

Yes, CC menu was a layer covered whole video element before bug 1271765(fx 53), so mouse event is suppressed if click on outside the menu. 
(In reply to Timea Zsoldos from comment #0)
The behavior is intended as I initially tried to crib from other browsers'. I would not see this as a regression since both behavior are sensible and built on different spec/background.

Comment 3

[Ray Lin[:ralin]]

Marking this as WONTFIX as the issue is solved in 53.