We've had this problem for a while but seemingly randomly we suddenly can't ungrab an object with a toggle, or can't teleport.
The ray cast will show up for teleporting, but the teleport does not register.
Re. the teleporting, I have a similar problem. When the teleport hand is also grabbing something, the teleport won't work although the ray shows. Also happens if the controller is touching a snap zone. Working on finding a solution, but not there yet.
In my case it happens even if i'm not grabbing something, sometimes i can fix it by walking around or leaning around.