Steering lock peg won’t pop up

[Snowey]

Hi still struggling to get the car back to some sort of standard spec but seem to be failing around every corner.

The latest little problem is that the square peg does not pop up when the key is out. I can lever it up and when I turn the key it goes down, but always stays down even with the key out. Is there some sort of leaf spring inside that popos the peg up and can this be replaced or changed.

Many thanks

David