Give a different window focus (such as by using alt+tab)
Return to the game
Attempt to lock onto something using the controller
The lock on with controller no longer works until you use mouse controls to lock onto at least one thing.
This bug was a major frustration for me when I was recently trying out mods, and I hadn't experienced it before, so I thought it was caused by a common dependency. But apparently, this is a vanilla bug -- it may have been introduced after my vanilla playthroughs.
Steps to reproduce:
The lock on with controller no longer works until you use mouse controls to lock onto at least one thing.
This bug was a major frustration for me when I was recently trying out mods, and I hadn't experienced it before, so I thought it was caused by a common dependency. But apparently, this is a vanilla bug -- it may have been introduced after my vanilla playthroughs.