[Bug-gnuzilla] Content Encoding Error - 52.6.0 (32-bit)

[kardan]

Hi,

(i am not on this list, please CC me)

as regular user of Tor Browser I have to access some websites without
tor and tried Icecat 52.6.0 (32-bit) as I prefer it for (hopefully)
better privacy defaults compared to firefox-esr or chrome.

The website of interest (wordpress.com/log-in) resulted in

"Content Encoding Error

The page you are trying to view cannot be shown because it uses an
invalid or unsupported form of compression.

    Please contact the website owners to inform them of this problem."

Encryption: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, 256bit, TLS 1.2

When I selected "Submit Feedback ..." i got the same error for
https://lists.gnu.org/mailman/listinfo/bug-gnuzilla
(TLS_DHE_RSA_WITH_AES_256_CBC_SHA, 256bit, TLS 1.0)

Same for about:support (https://libreplanet.org/wiki/Group:IceCat/).

Why are these not supported?

Is it possible to add a feature "access anyway" for this error?

Thanks for your work!
kardan