Android App Support ignores screen brightness

REPRODUCIBILITY: 100%
OS VERSION: 5.0.0.21
HARDWARE: C2 Community
UI LANGUAGE: English UK
REGRESSION: N/A

DESCRIPTION:

When launching android apps, screen brightness goes to 100% automatically.

PRECONDITIONS:

Get yourself somewhere with low light, ensure the screen is dimmed to the lowest.

STEPS TO REPRODUCE:

  1. Get screen dimmed / phone on dark room
  2. open android app (WhatsApp on my test)
  3. screen brightness immediately shoots up to 100%
  4. Swear at your phone as now your eyes are painful.

EXPECTED RESULT:

Screen brightness should be consistent throughout all the operating conditions, regardless if native of via support.

ACTUAL RESULT:

Brightness goes up immediately, regardless of previous value.

MODIFICATIONS:

Out of the box but installed 5.0.0.21 and a couple android apps.

ADDITIONAL INFORMATION:

Nothing I can screenshots, even sliding brightness adjustment by hand doesn’t change it.