1619225 - Video controls disappear after entering full-screen mode on Twitch.tv

Status: RESOLVED WORKSFORME

(Web Compatibility :: Site Reports, defect)

Description

[abodenlosz]

Affected versions

• 74.0b9
• 75.0a1

Affected platforms

• Windows 10
• Ubuntu 18.04

Steps to reproduce

1. Open Firefox
2. Go to Twitch.tv
3. Click on a live stream
4. Enter full-screen mode by any means (press the video control button, double click on the video, press "K" from the keyboard)
5. Exit full-screen mode by double-clicking

Expected result

• Video enters and exits full-screen mode and the video controls are visible and are functional

Actual result

• Video controls are completely disabled.

Regression range
This issue doesn't appear to be a regression.

Additional notes

• This issue appears to be reproducible only on live streams that contain Twitch overlays.

Comment 1

[Jared Wein [:jaws] (please needinfo? me)]

I'm unable to reproduce this on Windows 10, 75.0a1 (2020-02-28) (64-bit). The video controls I see on Twitch are provided by Twitch and are not the default Firefox video controls. Can you share a screenshot of the controls that you see when they do work?

Comment 2

[abodenlosz]

(In reply to Jared Wein [:jaws] (please needinfo? me) from comment #1)

I'm unable to reproduce this on Windows 10, 75.0a1 (2020-02-28) (64-bit). The video controls I see on Twitch are provided by Twitch and are not the default Firefox video controls. Can you share a screenshot of the controls that you see when they do work?

Here is the screenshot https://imgur.com/mJpYWQX

Comment 3

[Cristian Fogel [:cfogel]]

Reproduced the issue with 68.06 ESR on Windows 7.
In my case the STR were done in a quick succession. IT might help.

Comment 4

[Rares Doghi, Desktop QA]

This issue is not a regression, I was able to reproduce this issue 100% in all versions of Firefox including 73.0.1 all the way back to Fx 55, I will update the flags and remove the regression window wanted flag.

This is easy to reproduce if you can find any Twitch video with overlay on (recommend Hearthstone channels since most of the users have the Decktracker overlay on) as soon as you exit Full Screen mode the Overlay dissapears with all of the video controls.

This issue does not occur on Chrome.

Comment 5

[Jared Wein [:jaws] (please needinfo? me)]

Thank you for the screenshot. Those are controls implemented by Twitch.tv, so it looks to be a bug on their side. I'll move this over to evangelism, hopefully someone on that team can reach out to Twitch.

Comment 6

[Mathew Hodson]

I think the Web Compatibility product is the right place for this bug. That product seems to be where all the activity and "broken in Firefox, works in Chrome" bugs are.

The description for the Developer Engagement product where this bug currently is says "requests for events, outreach and demos"

Comment 7

[Oana Arbuzov [:oanaarbuzov]]

I've checked a few live videos, and for me the Twitch controls are available and functional at all times.
URL: https://www.twitch.tv/onscreen
https://prnt.sc/10c4k67

URL: https://www.twitch.tv/beyondthesummit
https://prnt.sc/10c4mlx

Tested with:
Browser / Version: Firefox Nightly 88.0a1 (2021-03-02)
Operating System: Windows 10 Pro

abodenlosz can you still reproduce it?