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Issue with zstd compression decompression in Firefox

Hello Mozilla Support Team, I am writing to report a problem with the Mozilla Firefox browser. After the latest update, the browser appears to no longer decompress conte… (xem thêm)

Hello Mozilla Support Team,

I am writing to report a problem with the Mozilla Firefox browser. After the latest update, the browser appears to no longer decompress content that is compressed using the zstd (Zstandard) algorithm.

Previously, I could view web pages or resources compressed with zstd without issue, but now they fail to display correctly (or give errors). I have tested this on multiple websites and different systems, which suggests the change is not specific to one site or machine.

Could you please clarify the following:

Has support for zstd‐compressed content been removed or disabled in the recent Firefox version?

If so, are there plans to restore this support in a future release?

Is there a workaround or configuration setting that allows enabling zstd decompression in the meantime?

Thank you for your attention to this matter. I appreciate your help in ensuring this functionality is restored or clarified.

Best regards, Oleh Boiko Windiws 10, FF 144.0.2

Được hỏi bởi kinoteatr.ua 1 tuần trước

Lần cuối trả lời bởi jscher2000 - Support Volunteer 1 tuần trước

I encontered one issue while I browsing one page the firefox browser will automatically logout but another browser like Edge will not.

I encontered one issue while I browsing one page the firefox browser will automatically logout but another browser like Edge will not. and if I use the firefox browser i… (xem thêm)

I encontered one issue while I browsing one page the firefox browser will automatically logout but another browser like Edge will not. and if I use the firefox browser in trouble shooting mode it also will not logout automatically. I've stored the developing tools logs for you to analyse.

Được hỏi bởi 58160514 3 tuần trước

Lần cuối trả lời bởi Denys 3 tuần trước

Why browser caching sometimes shows old results for dynamic tools?

I recently noticed a scenario where a web tool loads updated data (via JavaScript and backend API), but the browser (and proxy cache) still serves outdated content when v… (xem thêm)

I recently noticed a scenario where a web tool loads updated data (via JavaScript and backend API), but the browser (and proxy cache) still serves outdated content when viewed on a different device. Clearing the browser cache fixes it, but that’s not a scalable solution for users.

I’m curious: does Firefox’s caching behavior differ for pages that use heavy client-side updates (e.g., incremental score calculators) compared to standard static pages? Should we be explicitly sending cache-control headers like no-store or must-revalidate to prevent stale data?

Any documented guidance on how Firefox handles cache revalidation for dynamic web-apps would be helpful.

Thanks in advance for any pointers.

Được hỏi bởi William Thomas 1 tuần trước

Lần cuối trả lời bởi jscher2000 - Support Volunteer 1 tuần trước

the collapse of css files on some websites (mostly foreign ones)

some sites directly report the crash of their css files, suggesting clearing the browser cache or using a vpn. But VPNs are illegal!? It was the same in the previous ver… (xem thêm)

some sites directly report the crash of their css files, suggesting clearing the browser cache or using a vpn. But VPNs are illegal!? It was the same in the previous version of the browser... Websites take a very long time to load (half a minute or more)

Được hỏi bởi gsmhome 5 tháng trước

Lần cuối trả lời bởi jscher2000 - Support Volunteer 5 tháng trước