Seems to be an issue with the Lottery currently, where the display chat only goes up in increments of 1 thousand instead of 2. It takes 2k cubes, and I think behind the scenes it increases the lottery by 2k, but only displays 1k. Seen it twice in past 2 weeks, so guess there's some issue there. I assume once the lottery happens it fixes itself, but it could put people off using the feature if they see it and think it's been reduced (when it's actually a bug).