Nowadays when I log into Facebook through Firefox, it opens only 2 or 3 posts of the News Feed (it is happening very frequently but not always). As far as I can remember, I never experienced any such problem in the past, except rare and occasional crashes which were solved instantly. I am facing this problem since 5-6 months.

Whenever I face such problem with Firefox I log into Facebook through Google Chrome to check whether my internet connection is working properly and have found no such problem with Google Chrome. I have also checked to see whether this problem is caused by hidden updating of some apps or automatic scanning by antivirus but found none. I have also tried 'Refresh Firefox - reset add-ons and settings' and uninstalling and installing again but the problem was not solved. Any solutions, please?