Why all youtube clients stop displaying more videos at some point when scrolling down subs. feed?

[WPCentral Question]

When scrolling down subscription feed on my lumia 930 (8.1 cyan) all apps I have tested (mytube, metrotube, supertube) simply stop displaying more videos at some point (let say after 30 vids) - screen is bouncing back like there is nothing more to display. I haven't found any info about such issue, maybe you guys can help and solve the problem. Many thanks in advance!

 

[dKp1977]

This could be an API restriction. Especially since it's obviously affecting all 3rd party apps.

 

[kucy5]

I thought this may be the issue, however never seen anyone complaining about or even mentioning it. For me it is a huge let down - not being able to access all videos from subscribed channels. Thanks for the tip.