@FGN I can not reproduce the bug. After clicking x to remove the form, I refresh page and it appears again. I also tested by saving video and edit video, but I can not see any problem.
If you only show 1 video, find
<div class='ipsGrid_span1 ipsSpacer_bottom vbItem'>
Replace by
<div class='ipsGrid_span1 ipsSpacer_bottom vbItem' {{if count( $videos ) == 1}}style='width: 100% !important;'{{endif}}>
1. Each category has permission settings.
2. It's not a bug, it's the way how it works. Because in other applications may have sidebars, or custom javascripts but no way to load ips sidebar in ajax, and the a lot of other javascripts will be broken.
@Aleksandrs Davids Sidurins the 2.x version uses different template codes for columns layout so you can not use the old method. But I don't remember what you want to do.