@Arnova8G2 what the Logcat of the Back Camera crash says, im asking because i have an idea and Breaktru of this nasty crash what is causing it!
Im starting to think that maybe it is not just flashlight related problem from all the test in the past one month it is posible to be something with the FOCUS in low light when the Flashlight have to be used.
Like states above also was able to do success photo in the dark room conditions sometimes when im able to take a picture what i notice is when i press the button for shooting the Flash Light appear ON like it shold be and then the camera stay like this for few seconds and it is not FOCUSED! even doesnt try to focus with the circle in the cases that i was able to take a few shoots in the dark i manually press the viewfinder to force the FOCUS to focus in front of me and in some cases this is working but not always.
Also when im able to take a photo in Low Light scenario this are the things that im observing.
Presing the Button the flash goes ON and Stay ON then the circle for the Focus Appear and i can clearly see that the Image is focused if this heppans after that the Circle start to Load u know what i mean and in tis cases we always get the photo done.
How the Crash look like from the real expirience is this:
You pressing the button to shoot the Flash Light appear ON but after that you dont see that the camera image is focused ( looking like the Camera is trying to Focus without success) after few seconds when the focus is not posible the app crash ( Looking like it reaches some time pingout for flash ON and when cant focus well its force close)
Thats why im starting to think that maybe the problem is not just the flashlight maybe the flashlight is OKAY but the FOCUS under flashlight or the Focus in LOW light situation can cause this to heppans.
Thats why im asking you what info you was able to get from the Logcats and maybe this idea/info that im sharing is helpfull.
ALSO very important Note that lead again to the FOCUS is this sitation.
Lets say im going to take picture in Dark ROOM will shoot the wall in front of me and the wall is lets say 1 metres from me ( very close) so in this case can take picture with the back camera and autoflashlight)
But if i try to shoot in the dark far away object or lets say Outside my window or in a bigger room that the distance of the wall is bigger its seems again that the Focus cant focus well in front of me and the camera crashes.
So i was thinking alot of the times well if the FlashLight Cause this crash then why if i shoot close up obejct that the camera can focus easy in front of me he take the shoots and why if the obejct is far alway cant.
This lead me to think that we got problems with the focus in Low Light sitation more specific this can be the PD laser Autofocus or just the regular Gcam Focus.
Thanks in advance.
A Breaktru, Im sure now! I decide to test this in the practic and YES.
Ataching picture the picture is taken with Pixel ZSL HDR+ in Black Dark ROM with no any light Source only the Autoflashlight but like you can see im holding and object in front of the camera with my hand so after i press and the flashlight goes on the obejct is focused and from all attemps im always taking a Shoot without any crash or problem if i remove my hand from there and try to shoot object that is more far away then the CRASH will heppans. This prove it is something with the FOCUS not the Flashlight i guess.
Second Image even in Portrait mode the Back camera Work in the same Black Dark room only using the Flashlight because the Object (I have to call someone for the test

) Is close to the Camera and it is focused fine! )
Note i did the test with V7 Test 1 but it is the same in all other that have this Low Light Force Crash.
So when we talk for the FOCUS problem Back in your Version 1.2 stable when you was editing something with the Focus we dont have any problem with Pixel ZSL HDR+ in Low Light to Focus im giving this as an info because maybe there is the Answer how this version focus!
Also tracking down the builds all your Old Builds not based on the Pixel2 works i will Exclude 1.6 and 1.7 because you know there Pixel ZSL HDR+ doesnt work but lets say
Arnova 1.2 i was trying to find out what was the change this Pixel HDR+ config always to work in low light and to focus.
And i found out that early in version 1.1 just befor the release of the Stable 1.2
You did this:
https://forum.xda-developers.com/showpost.php?p=74780842&postcount=1863
Thats why i think if in Pixel2Mod the Focus code is touched this cause some problems! and also leter on when releasing the official stable Arnova 1.2
thats the main reason the Pixel config to work perfectly fine and focus with autoflashlight :
https://forum.xda-developers.com/showpost.php?p=74814651&postcount=1911
So the Big change comes in 1.1 by restoring all focus codes!
Im 99.9% Sure after all this Tests that this is Focus in Low Light Problem and the Flashlight is just working fine.