I use the "Flagged" view of the My Games page almost exclusively.  It's a great feature to let you control exactly which games show in the list.  In this view there is an "Unflag" column  containing a green Flag icon for each game, and clicking the icon used to toggle the flagged status of that game, removing it from view.  This stopped working recently (within the last week?).

Can you check again? This should be working now.

Yep, all good.  Thanks Tom.