2031974 - www.ozon.ru - Review videos are not playing

Status: REOPENED

(Web Compatibility :: Site Reports, defect, P2)

Description

[Raul Bucata]

Environment:
Operating system: Android 16
Firefox version: Firefox Mobile 149.0

Steps to reproduce:

1. Navigate to: https://www.ozon.ru/product/tochilka-dlya-nozhey-i-nozhnits-elektricheskaya-besprovodnaya-2705059921/reviews/?itemId=2705059921
2. Click on the "Play" button from a video and observe

Expected Behavior:
A player is triggered and the video plays

Actual Behavior:
Nothing happens

Notes:

• Reproduces regardless of the status of ETP
• Reproduces in firefox-nightly, and firefox-release
• Does not reproduce in chrome

Created from https://github.com/webcompat/web-bugs/issues/216192

Comment 1

[Raul Bucata]

Attachment: chr vs ff 147 android

Comment 2

[BugBot [:suhaib / :marco]]

Since nightly and release are affected, beta will likely be affected too.
For more information, please visit BugBot documentation.

Comment 3

[Sky Schubert [:skyschub]]

We've previously had bug 1901691, but couldn't reproduce. This time, though, I can reproduce - it seems like it's not responding to any touch events, not even the toggle thingie in the top.

It works if I spoof as Chrome?!

Comment 4

[Simon Farre [:sfarre]]

(In reply to Dennis Schubert [:denschub] from comment #3)

We've previously had bug 1901691, but couldn't reproduce. This time, though, I can reproduce - it seems like it's not responding to any touch events, not even the toggle thingie in the top.

It works if I spoof as Chrome?!

Also, enabling "Desktop site => on" (will obviously show different site) but then input starts working.

Comment 5

[Jeff Muizelaar [:jrmuizel]]

It might be worth doing a bit of investigation to figure out what is happening differently depending on the UA sniffing

Comment 6

[Randell Jesup [:jesup] (needinfo me)]

On android nightly, I can reproduce, but I also see a content difference - when spoofing I get a gallery near the top of video thumbnails; when as firefox I don't get that gallery

Comment 7

[Hsin-Yi Tsai (she/her) | away [:hsinyi]]

(In reply to Jeff Muizelaar [:jrmuizel] from comment #5)

It might be worth doing a bit of investigation to figure out what is happening differently depending on the UA sniffing

Hi Leo, care to give another deeper look at this? Thank you.

Comment 8

[Leo Tenenbaum [:ltenenbaum]]

Also reproduces on Firefox Desktop with a Firefox Android user agent, but interestingly not Chrome with the same user agent. Difference seems to be that the click event listener is not being set on the video preview. I'll look at this more tomorrow

Comment 9

[Leo Tenenbaum [:ltenenbaum]]

Okay it does seem to just be an issue with the HTML that the server is returning (the <div data-widget="webToAppBanner"> is replaced with a comment which screws up Vue hydration). The reason it's not broken on Chrome with a Firefox Android UA is that the Accept header includes image types. Either setting network.http.accept_include_images = true or using a Chrome UA fixes the problem. Probably it's easiest to just override the UA with a webcompat intervention.

Comment 10

[BugBot [:suhaib / :marco]]

Set release status flags based on info from the regressing bug 1917177

:valentin, since you are the author of the regressor, bug 1917177, could you take a look?

For more information, please visit BugBot documentation.

Comment 11

[Valentin Gosu [:valentin]]

Either setting network.http.accept_include_images = true or using a Chrome UA fixes the problem. Probably it's easiest to just override the UA with a webcompat intervention.

This is quite weird. That means the website specifically chooses the wrong behaviour for Firefox?
We have considered reverting bug 1917177, but we're waiting on https://github.com/whatwg/fetch/issues/274 to be resolved to avoid flip-flopping again in the future. If this is becoming a much bigger webcompat issue we could definitely ship it as a fix.

Probably it's easiest to just override the UA with a webcompat intervention.

I agree.

Comment 12

[Leo Tenenbaum [:ltenenbaum]]

Attachment: Bug 2031974 - Add UA override for www.ozon.ru. r=#webcompat-reviewers

Comment 13

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/a5f7ab9926d5
https://hg.mozilla.org/integration/autoland/rev/4f6f5dba9b68
Add UA override for www.ozon.ru. r=webcompat-reviewers,twisniewski

Comment 14

[Cristian Tuns]

https://hg.mozilla.org/mozilla-central/rev/4f6f5dba9b68

Comment 15

[BugBot [:suhaib / :marco]]

The patch landed in nightly and beta is affected.
:ltenenbaum, is this bug important enough to require an uplift?

• If yes, please nominate the patch for beta approval.
  • See https://wiki.mozilla.org/Release_Management/Requesting_an_Uplift for documentation on how to request an uplift.
• If no, please set status-firefox152 to wontfix.

For more information, please visit BugBot documentation.

Comment 16

[Thomas Wisniewski [:twisniewski]]

Oops, this was meant to be kept open for tracking.