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One site's single webpage not functioning after Firefox Desktop Update, why?

Firefox Web compatibility
jbr replied 2 tundi tagasi
LionAdvocate
LionAdvocate

Updated Firefox browser for desktop on Mac to 158.0 on 10/15/26

On 10/14/26 using previous Firefox version 157.0 on Amazon.com Prime Video section, pages would load properly and videos could be played properly.

10/15/26 using updated version on Amazon.com Prime Video section, page would initially load properly only to later freeze. Videos could not be played. And freezing could not be corrected unless closing the tab on the browser.

10/15/26 using Safari browser on Amazon.com Prime video section, pages loaded properly and videos played properly.

Clearing cache and site data on updated version of Firefox did not have any effect. Pages continued to freeze and videos unplayable when starting over and navigating to the relevant pages.


Steps to reproduce:

go to amazon.com login to account go to prime video page

expected results video selection appears and user can select and play videos

actual result video selection appear but freezes after a second or two,. videos cannot be played

Repro rate 5/5

Environment Variables Firefox 158.0 Mac OS GoldenGate 27.0.1

Other information Other amazon pages like whole foods and home page and Subscribe & save not affected Just Prime Video page affected

Updated Firefox browser for desktop on Mac to 158.0 on 10/15/26 On 10/14/26 using previous Firefox version 157.0 on Amazon.com Prime Video section, pages would load properly and videos could be played properly. 10/15/26 using updated version on Amazon.com Prime Video section, page would initially load properly only to later freeze. Videos could not be played. And freezing could not be corrected unless closing the tab on the browser. 10/15/26 using Safari browser on Amazon.com Prime video section, pages loaded properly and videos played properly. Clearing cache and site data on updated version of Firefox did not have any effect. Pages continued to freeze and videos unplayable when starting over and navigating to the relevant pages. Steps to reproduce: go to amazon.com login to account go to prime video page expected results video selection appears and user can select and play videos actual result video selection appear but freezes after a second or two,. videos cannot be played Repro rate 5/5 Environment Variables Firefox 158.0 Mac OS GoldenGate 27.0.1 Other information Other amazon pages like whole foods and home page and Subscribe & save not affected Just Prime Video page affected

All Replies (4)

jbr
jbr
  • Top 10 kaastöötaja

See if you have "Remote Improvements" enabled: support.mozilla.org/questions/1611943

LionAdvocate
LionAdvocate Küsimuse esitaja

I had it disabled. If I enable, how soon will I get these improvements? Does it require a browser refresh? Or system reboot? Both?

jbr
jbr
  • Top 10 kaastöötaja

It will pull the collections on a browser restart, and might take one extra restart then to apply the change, let me try to find the name of the rollout to fix… [BRB]

jbr
jbr
  • Top 10 kaastöötaja

Gah, I don't see my profile getting enrolled in that, sorry — it's supposed to be called "Software H264 decode pref flip" — feel free to follow bugzilla.mozilla.org/show_bug.cgi?id=2081882#c3 instead to disable the preference yourself manually if that resolves that for now.

Küsimuse postitamine

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