I can see comments under YT videos just fine when I am not logged in, but after I do login, comments have disappered. They return when I disable ABP, so this is either ABP related or, which is more likely, an easylist prolem, since that is the only list is use.
I am using the latest Firfeox and ABP version, subscribed to the latest version of Easylist+ Easylist German
comments disappearing on youtube
Please submit an issue report via ABP and post the link here.