I've been searching this for a while but no hit. I wonder if it's only me having this issue. Turn on auto brightness on iPad. Screen is locked. Turn off all lights in a dark room. unlock the screen and the brightness should be low due to low environment light. Now turn on the light so the screen automatically becomes brighter, then turn off the light again. Usually at this point the brightness should immediately fall back to low again but on my ipad it wouldn't change unless manually lock the screen and unlock it again. This issue is annoying and I have to turn off the auto brightness. Does anyone have the same issue or it's just me?