YouTube freezing on Firefox after Sequoia 15.6.1 update

Since the automatic update to Sequoia 15.6.1 on my iMac, YouTube now freezes, and sometimes doesn't open in another tab, says, "account.blank" but MAIN QUESTION IS: Is there a bug in the 15.6.1 update that causes YouTube to freeze on Firefox?


[Re-Titled by Moderator]

Original Title: After update to Sequoia 15.6.1, my YouTube freezes on Firefox. Is there a known bug AND workaround?

iMac 24″, macOS 15.6

Posted on Oct 25, 2025 11:14 PM

Reply
6 replies

Oct 27, 2025 4:27 AM in response to den.thed

den.thed wrote:
I also recommend updating to the latest macOS, Safari and Firefox versions.


I would hesitate about installing the "latest" macOS as part of a solution to this issue. The "latest" is macOS 26 which is a complete remake of the OS and upgrading now might add a lot of other distracting complexities you may not wish to deal with at the same time. What you should do is make sure you have updated the latest Sequoia version 15.7.1


I have no issues with YouTube in the latest Firefox and the latest Sequoia and using uBlock.

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YouTube freezing on Firefox after Sequoia 15.6.1 update

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