cannot remove Prestige Award items when MULT

To repro... Pathfinder. Load sources CR + APG + Guide to Organized Play. New character. Go to Feats & Abilities > Background, select Prestige Awards. Select "Fame" in left pane and "Add Selected >". It adds it. Select "Fame" in right pane and "< Remove Selected". That works. But Fame is MULT:YES so now add it a few times. It shoes as 4x, 5x or whatever. Now try to remove them. They do not remove. This is a new problem to 6.3 and ADAIK it worked correctly in 6.2.