Bootloader is not defined - facebook not showing images just text

I tried to uninstall and install a fresh installation of FF, but I still cant see images in some website including facebook, I just showing text.
I search the web and I saw that it happend to a lot of peoples but I coudln't find an answer.
it is not relevant to image block (via content tab).
whan I look at the 'Error Console' I see a lot of errors regarding bootloader is not defined and big_pipe is undifined.
please help


10x, but already check that - nothing is blocked -
the problem is relate to the bootloader, which is undefined.
one more thing - when I change the address to https I can see most of the images (but not all)