I have turned off all notifications in Android 5.1.1 (although from my research, it doesn't appear to be limited to that OS- 4.3 and up at least). It appears every time I update the app, it resets the notifications to "on." Which is only mostly annoying at 1am. :/ I can confirm it isn't a reboot, and mine is not related to crashes of the apps themselves. I have run some brief tests to confirm it's the update, but don't have enough data to confidently say it's the update. Anyone? Related: Does anyone know if Marshmallow's (6.x) "specific app permissions" alleviate this problem? Thanking you all in advance!
This depends on whether or not the application is replaced, or simply updated. If you do it through the Play Store, it will likely reset the notification settings. If you were to install it through other means (such as adb install) then it depends on whether or not the original application was 'updated' or re-installed