User blog comment:Rappy 4187/Technical Update: February 1, 2017/@comment-168424-20170206205745/@comment-26402117-20170207203521

It won't fit the window fully in any screen below 1080p (clocking in at ~800px height), while the 768p screen resolution is still the most used on the web. It also dropped the interesting design cues they added to the old right rail module. I guess I will just hide the larger panels.