Trades on a chart missing from backtest

Using the exact same code, and exact same database on two different machines, one of the machines is missing three of the trades that the other machine has. There are a total of 6456, so three isn't that much, but it is still an issue. Weird thing is that I can see the trades via symbols I plot on the chart, so I know that the setups are getting hit on the chart. See:
Capture

What could cause this?

figured it out. It is because MinShares was set to 1!

allowing fractional shares let them through