I have a rooted SM-J701F running Android 8.1. Is there any way I can take screenshots for apps (e.g. Magzter) whose security policy restricts them?
I don't think that'd be possible. Magzter is a magazine app and they definitely won't want people to share very high resolution screenshots of magazines from it.
This does not work inside google chrome mobile incognito mode tabs(non-rooted Android M),screen will show as blank black background.
I wish I could use the Xposed module, but Xposed breaks Safetynet in my phone and prevents me to use apps like GooglePay.
Try Samsung browser with the apps that I have mentioned and see if it works for normal mode. Working for me.
Well there are apps/modules that turn off that "sense" but from personal point of view rooting only for this specific feature isn't worthy.
My phone is not samsung & anyway this restriction is there in chrome incognito tabs only,most probably any other browser not based on chrome should be fine(even chrome earlier versions it was not an issue).
Samsung browser can be installed on any Android phone.
This worked! I used the new EdXposed framework which doesn't trip safetynet to flash the module and now I'm able to take screenshots as I please.
Can you check if this works inside google chrome incognito mode tabs?
Yes, it does.