Go to settings> developer options>apps> don't keep activities.
Developer Options - scroll to the bottom uncheck the the first box under apps
Hope you find this useful!
did this and was able to again close all my tabs open. crazy crap.
Re: Why is my AT&T Note Edge deleting incoming text messages?
my Samsung alpha with at&t just started doing this. no clue. no common denominator, one deleted itself while I was reading it.