Serious bug when someone gets negative assets – Richman 4 Fun HD Review

The game is great except for a serious bug: before a character is broke, it automatically sells his lands to make up for his debts. However, if the total asset goes to a large negative number, his cash suddenly turns to a huge positive amount, and he will win immediately. Looks like an integer overflow problem. Please fix it.
Review by Cnconan on Richman 4 Fun HD.