In your latest update, there’s now this pointless blue border on the sides. I have no idea why you added it, but could you please remove it again? I find it an eyesore, it has no function, and takes up screen real estate. The screen is already crammed with information already, without using up areas of the screen for no reason.
Are you on Android?
The following will fix it:
Settings->Display->Hide home buttons - select app in list.
I am on Android but I don’t have those settings. I don’t think it’s a settings problem, anyways. The borders don’t do anything, they’re not related to the home button or anything like that. Maybe they added them because the art doesn’t quite fit my screen dimensions, but I really doubt that, because my phone is a pretty standard dimension, and up until yesterday those borders weren’t there.
Note that this only fixes android pre-M. Still working on a fix for Marshmallow devices.