Help Apps on Galaxy S6 minimizing at random

[Igs]

This week (after a software update) the apps on my Galaxy S6 started minimizing and maximizing at random. I checked other forums and tried wiping the cache, but that didn't work.

1.) Model Number ? SM-G920P___________
2.) Firmware Version ? __Don't know_________
3.) Baseband Version ? G920PVPS4DQL2___________
4.) Kernel Version ? _3.10.61-11881452 dpi@SWHE7721 #1__________
5.) Build Number ? __NRD90M.G920PVPS4DQL2_________

Also do you have a T-Mobile Data plan on your
PayAsYouGo or FlexPay Plan? _______no_________

Carrier ? _Sprint______ (we know some are also Unlocked so not Just T-Mobile)

Country you are using your phone in ? __USA_______