Web-bugs: youtube.com - Firefox tab shortcuts (Alt-1..9) change current time on YouTube

[lnicola]

URL: https://youtube.com

Browser / Version: Firefox 65.0
Operating System: Linux
Tested Another Browser: Yes

Problem type: Something else
Description: Firefox tab shortcuts (Alt-1..9) change current time on YouTube
Steps to Reproduce:
Until around November, I was able to change to another FIrefox tab by pressing Alt-1..9. This still works now, but the player also changes the current time (e.g. 3 goes to 30%), just like when pressing only digits.

Firefox before November, Chrome:

• Alt-3 used to switch to the third tab
• 3 used to seek the player to 30%

Firefox after November:

• Alt-3 changes tab, seeks the player to 30%
• 3 seeks the player to 30%

Also happens with Firefox 63 (release), so this might be a change on YouTube's side.

Browser Configuration

• None

_From webcompat.com with ❤️_

[676339784]

Anybody else with this issue?

[lnicola]

Still happens for me in latest Nightly. It was also reported by someone else here.

[676339784]

Ah ok, I'm on regular so I guess if it's not fixed in Nightly it wouldn't be fixed for me either. Not sure how to bring additional attention to this issue.

[softvision-oana-arbuzov]

Thanks for the report @lnicola, but I'm not able to reproduce the issue.
For me Alt-3 only changes tab without modifying the progress indicator of the player to 30%, that only happens if I click 3. The same behavior is present on Chrome too.
Also on Windows using Ctrl-3 changes tabs without modifying the progress indicator of the player to 30%.

Tested with:
Browser / Version: Firefox Nightly 66.0a1 (2018-12-12)
Operating System: Linux Ubuntu 16.04

@lnicola or @676339784 , can you still reproduce it? It there something else you are doing?
Could you try clearing cache/data/cookies, disable Ad-blocker (if available), or use a clean profile (about:profiles), and check again?

[676339784]

Hey @softvision-oana-arbuzov,

I restarted Firefox under safe mode, which should isolate the issue from add-ons at least, but the issue persists. I'm on FF 64.0 running on Arch Linux.

[softvision-oana-arbuzov]

Thanks @676339784 , I've manage to find an Arch Linux and the issue is indeed reproducible.
The behavior is not encountered on Chrome 66.0.3359.181.

Tested with:
Browser / Version: Firefox Nightly 66.0a1 (2018-12-12)
Operating System: Arch Linux 4.14.3-1-ARCH

Moving to Needsdiagnosis for further investigation.

[lnicola]

Wait, this is getting strange. I'm on Arch Linux myself (running the AUR Nightly package, which is a Mozilla build), but I can't reproduce the issue in a new profile.

@676339784 can you try that? You can run firefox --no-remote -P and follow from there.

[676339784]

@lnicola Assuming I did it right (some pop-up came up and I just click start Firefox), the issue is still there

[lnicola]

@676339784 you have to click "Create Profile", "Next", "Finish", select the new one if it isn't already selected, make sure the two check boxes are unchecked, then click "Start".

[676339784]

@lnicola Yep, issue is no longer there!

[softvision-oana-arbuzov]

Indeed, after creating a clean profile the issue is no longer reproducible.
Also checked while being logged into the YouTube account and it is not reproducible.

I'll close the issue.

[lnicola]

@676339784 do you have the YouTube classic add-on? I can reproduce the issue in a new profile after installing it, even after I disable the add-on. In my old profile, disabling the add-on and loading YouTube in a Private Browsing window fixes the issue.

I assume the add-on is setting a cookie or something similar to ask Google for the old version, and it stays after disabling it. The issue is on YouTube's side, but only affects the classic UI, which I would assume is unsupported.

So the only fix might be to remove the add-on and choose "clear site data" to reset the cookies. The new UI is still laggy in Firefox, but such is life.

[676339784]

@lnicola I do have the YouTube classic add-on. Just removed it and it works just as you've said. Thanks again!

[softvision-oana-arbuzov]

Thanks @lnicola for your investigation, that is useful info for anyone that experiences the issue.

[lock[bot]]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue at https://webcompat.com/issues/new if you are experiencing a similar problem.