This is an apparent pair of bugs. Suppose it's $200 to call. You raise $600. You would expect to put $800 in the pot -- your $200 to call, plus the $600. The first bug is that the top of the screen says "Raise $800". This is wrong because you're raising $600, not $800. The second bug is you put $1000 in the pot instead of $800! It apparently counts the amount to call twice, which it shouldn't do.