I was testing the incoming play test build in single player and I have seen a bug with the input when doing ADS.
I have the ADS input configured as Toggle with in the right mouse button.
The bugs is like sometimes it does like a double input, I mean, you push the button to aim, it aims and then finish the aim without any mouse click. Or in reverse.
I have not discovered the replication yet. But maybe anyone had the same issue and can help to identify the problem.
Greetings!