Hey, @grovert.
We're glad you're here!
Did this also happen when you took the batteries out of the Roku remote? If you haven't done it yet, try removing them after you turn the TV on and see if the problem still happens.
The remote might be sending some signals to the device, which could be why apps are opening up on their own.
Let us know what you find out!
Roku Community Team
Emmanuel-D.
Roku Community Moderator