CodeBlocks forums banned access from Firefox on Debian Linux

[gh_origin]

I have said about it again and again but no one believes. Today I confirmed it (again). Latest Firefox (real Firefox 84 from Mozilla). Not Basilisk. Not any other Firefox based or Firefox derived browsers.

Screenshot:

[Commaster]

It's not only Debian. I've been able to reproduce this issue on both platforms:

All links contain

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?PHPSESSID= argument when you aren't logged in and they redirect to the main website, not the forums (even though the subdomain claims to be forums...)

So I suspect this issue only affects Guests...

Trying to login also kicks you out to the main website and makes you unable to access forums while your login cookie exists.

[Commaster]

I think I'm getting closer...

FF sets a request option/header

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TE: Trailers and when I convinced FF NOT to set it, the page loaded correctly.

Maybe it breaks Cloudflare or the main server? https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/TE

P.S. Vivaldi and Opera don't set this request option/header

[omlk]

I wrote to you that the default ff included only https, and your server incorrectly redirects therefore both a problem and the certificate already as 2 years came to the end for a forum

[Commaster]

https mode is completely irrelevant to this issue

[omlk]

I use FF 84.0 and I disable options https only, becouse can't load forum page. Why administartor not use free Letsecrypt certificate?

[stahta01]

It's not only Debian. I've been able to reproduce this issue on both platforms:

What is the second platform (that you have duplicated the issue on) ?

Tim S.

[Commaster]

What is the second platform (that you have duplicated the issue on) ?

Tim S.

Sorry, thought it was obvious.

Windows 10.

My bad.

[stahta01]

What is the second platform (that you have duplicated the issue on) ?

Tim S.

Sorry, thought it was obvious.

Windows 10.

My bad.

I have not seen the issue on Windows 7. Edit: Using FF 84.0 (64-bit)

Tim S.

[Commaster]

I have not seen the issue on Windows 7. Edit: Using FF 84.0 (64-bit)

Tim S.

You have to log out and nuke your codeblocks cookies and/or use incognito mode. Also FF 84 x64.

Though it might be Win10 only.. something about modern software?