dominiquefournier

I try to disable all the extensions, but the problem persists on my Firefox 78.15.0esr (64 bits) on Debian (I disable the cache too, check if there is network error)....

Yes it is the Debian Stable "Bullseye" Firefox Version. I can not upgrade the version : my system stay in stable, sorry. https://packages.debian.org/search?keywords=firefox&searchon=names&suite=stable&section=all