Screen and keyboard acting strangely (Samsung Galaxy S8+)

[Matt Grieves]

So, as of yesterday, my phone's been waking up by itself and my keyboard minimizes every ten seconds-ish (Samsung and Third-Party keyboards). I've cleared caches, tested my battery (which works fine by the way) and still nothing. I read an article where other users had this problem, yet I found no solution. Please help, it's extremely annoying.

Update: I found the issue. It was a game that was constantly running in the background.