BUG: I can't dim my surroundings to pitch black and keep it black in Full Screen MR mode .

I can't I dim my environment to pitch black , and keep it black, when using Full Screen in Mixed Reality immersive mode... Well I can get it totally black, but then when you physically move slightly , the dimming automatically pops the setting back to make things dimly visible again. 

This seemed to have been fixed with release on version 2.3 - you could watch movies on Disney or Netflix, go into Full Screen immersion in MR mode and move about on the couch in a total black void without any visible distractions - which was great! Unfortunately as soon as the 2.4 release update rolled out, it reverted back to the broken behavior of snapping the dimming amount from total black to dimly visible every time you moved a little. I try and create a huge cinema size screen about 10ish virtual meters away from me, however when the dimming turns on I get the walls and objects in my tiny apartment messing with the illusion (and causing a stereo vision headache if not avoided).

The unwanted auto behavior only seems to happen in Mixed Reality mode. If I go into the full VR home environment, then I can dim down to total black and it sticks and stays black no matter how much I move around. However it takes multiple clicks to get into and out of VR home mode from MR mode and back again that seem totally unnecessary, if the dimming worked as expected (as in v2.3)...

If someone wanted the auto undimming behavior (hard to know who would choose that voluntarily, however...) - then please make it a selectable option! If you don't want it to do that behavior, then let it be turned off. There is plenty of space in the settings areas.

Also , while thinking of it, can we please add the "lying down mode" switch (currently buried in the Experimental section) to the Quick settings page, where it belongs? Please?

The Quest 3 is a really good Cinema simulator for media content, even in its 2K LCD version (roll on a higher res OLED version... which will make it even better ) . Please help maximize its media consumption abilities.