Default [Q] Auto brightness on 4.3

Some little things on .290 ROM are simply ruining the pleasure of use Z1 as a media player.
One of these is the "bug" on auto brightness.

Even when disabled it still acting in ANY situation, interacting with the predominant color that are being displayed!
This thing are driving me nuts watching videos on Netflix and reading this forum on Tapatalk!

Is there any way to disable this f#cking thing?
Thanks in advance!

Sent from my Honami!