Im fully updated and my child sims bought some marbles and I wanted to play to get more rather than buying them. When I chose to play for keeps they lose the marble if they lose but if they win they just keep their marble and don't get any new ones. I use very few mods but I did find an instance of someone who had the same problem but they didn't report it i guess.
Edit By Crinrict: Adjusted Title fit migrated bug report: [ARCHIVED] [FR] No new marble after 'Playing for keeps' | EA Forums - 11616576
Archived thread had around 79 me toos