1351020 - Audio indicator disappears after unmuting tab if video continues playing while tab is muted

Status: RESOLVED WORKSFORME

(Firefox :: Tabbed Browser, defect)

Description

[684sigma]

I have a problem with Firefox Beta 53. It also happens in Nightly 55. Doesn't happen in Beta 52.
Sometimes audio indicator disappears in tab. Here's how to reproduce it:

1. Open this video, click on preferences button inside the video https://www.youtube.com/watch?v=ZGqhhx8cxMg
2. In less than 3 seconds press K, then Ctrl+M, then K, then Ctrl+M

Result: The tab doesn't display audio indicator.
Expected: The tab should display audio indicator.

Comment 1

[YF (Yang)]

Why is this bug not a dupe of bug 1346872?

Comment 2

[684sigma]

(In reply to YF (Yang) from comment #1)
> Why is this bug not a dupe of bug 1346872?

Bug 1346872 is about Web Audio, and this is about <video> element. I observe different set of buggy behavior (Web Audio compared to <video>). I'll check both of them once Bug 1346872 is fixed. Will see.

Comment 3

[Loic]

This bug has the same regression range as bug 1346872 which is a regression og bug 1192818.
So it's probably the same underlying issue and a duplicate of bug 1346872.

Comment 4

[684sigma]

(In reply to Loic from comment #3)
> So it's probably the same underlying issue and a duplicate of bug 1346872.

I'm using Nightly 2017-04-01, and Bug 1346872 is fixed, while this bug isn't fixed.

Comment 5

[Liz Henry (:lizzard)]

Likely to be fixed in beta 10 by backing out bug 1192818 from beta. (It will stay on 54)

Comment 6

[Ryan VanderMeulen [:RyanVM]]

Should be fixed on Beta by the backout of bug 1192818.

https://hg.mozilla.org/releases/mozilla-beta/rev/0274a55c5f30

Comment 7

[Nathan Froyd [:froydnj]]

(In reply to Liz Henry (:lizzard) (needinfo? me) from comment #5)
> Likely to be fixed in beta 10 by backing out bug 1192818 from beta. (It will
> stay on 54)

Are we planning on pushing for a fix in 54, then?  This doesn't seem like a great regression to have.

Comment 8

[Liz Henry (:lizzard)]

Alastor, can you take a look here?  I'm not sure if this should be your bug or someone else's. but it may still be broken in 54.

Comment 9

[Alastor Wu [:alwu]]

Now I can't reproduce this issue on FF55, I'll test in on FF54 later (still compiling)

Comment 10

[Alastor Wu [:alwu]]

I can't reproduce this issue on FF54 as well, need QA's verification.

Comment 11

[Liz Henry (:lizzard)]

Looks like whatever got disabled in bug 1192818 for 54 (and fixed in 55) resolved the issue. Thanks for checking!