Now I'm going to have to experiment with this. As a rule. the first this I do when I get a Ruger home is polish it up, including the ejector slot. Then a trigger job. I will fill the cocking piece, boltway and lugs up with a baking soda toothpaste and start working the bolt until it feels right.
When you clean all the goo out and lube it a bit, it feels like butter. That may be why I have never seen this.
Or have I? I'm kind of wondering if this may happen on the bench and we don't think of it as an issue. I have never had a failure to eject in the woods.
I used to spend time practicing "pinky open, thumb close" with the rifle at my shoulder. I don't think about it much now. I guess it's muscle memory.
