Just tried this and multiple apps did the same thing it even pulled apps that I haven't opened or had opened since yesterday.
Also I've notice that the app KeepSafe will keep launching after closing it by swiping up. (Side note- this app uses the Touch ID feature upon opening. )
It's not a bug, it's a feature! PHANTOM APPS!
Seriously though, I installed the beta and turned off the search, and turned off iCloud backup. Still getting rapid battery drain, and have phantom apps I'm not even using show up in battery usage.
Back to 8.3 for now.