Is this Rithmic or Multicharts' Bug?

Please see attached picture below and here is my understanding.

1) I entered 2 sell contracts at 173.5 at 9:12AM
2) I reversed my position at 173.5 at 9:23AM. The entry price and the exit prices are the same; hence, the profit should be zero. For some reasons, MC shows realized P/L $1,687.50.
3) I then reversed my position at 10:37AM and the entry price is the same as the exit price. Again MC shows a profit of $1,686.50.

Hello Adrian Uncle,

Please attach a screenshot of the instrument settings (QuoteManager-> Edit Symbol-> Settings) and upload the logs for this occurrence (Help tab->Support->Logs Collector).