best thing ever the retractable shelf imo. Never have to leave the shelf at home\forward plan.I just leave mine installed - seems fine.
I 'had a little play' a few weeks ago - keen to see how it retracts and how you can rotate 180 degrees - no problem.
I'd give Honda a ring - remind it's still new .... etc., .... and see what they say.
Perhaps there's 'been a faulty batch' or something and, considering it's not a major expense, they'll simply replace under warranty ...