Apple Keyboard UI bug

There are some UI bugs that bugs me in the latest version of iOS. This bug exists from iOS 9 beta and continues to exist on iOS 9.2.1. I have reported it several times to Apple, but nothing has happened till now.

The bug occurs when the keyboard is split and merge in iPad(possibly in iPhone too). The design becomes horrible during the transition. Before iso 9, the keyboard split and merge was exceptional.

You can see from the below images what I am talking about.

blur and double key effect. Keyboard goes little up
spacebar is nowhere to be seen. Also see the edges. One is sharp, other is rounded.
square edges one side and rounded edges on another
see the cut on the left part right side on the bottom

I don’t know what is taking apple to fix these simple UI bugs. The fixation is long overdue.