BETA version -- 5.0.1002.182

[Admini]

1. ok. will try and do that soon, hopefully it gets fixed.
2. not all the time, the contained look makes it looks better and less messy for me, where the three columns is taking too much space on my screen. i liked and got used to the narrow one (two columns) like in the old version. it would be great to have that look back.

Seems this is normal behavior of multiple column bookmark menu.
Its principle is to take up as much screen as possible.
You may try changing column width in chrome://settings/cbBookmarks to adjust columns.