Controller sleeping causes game to stop recognizing it.

I am on PC using an Xbox One controller connected via bluetooth. It works normally for any game I play, and it FUNCTIONS normally for Wild Hearts. The issue is that if I leave my controller for 15 minutes, it will go to sleep. After that, the game will no longer recognize inputs from the controller. The only way to fix that is to restart the game. 

Extra notes:

Playing on the Karakuri Edition purchased through Steam.

KBM inputs will still work after the controller stops working, I just use KBM to save and exit and relaunch.

It doesn't seem to matter if the game is launched with the controller on, or if I turn it on after launching the game. 

Manually turning off the controller in game and then back on (via Xbox button) causes the same thing to happen.