No. According to the manual, all statistics variables ending with "Long" or "Short" include phantom trades. If a trade wins, the loss streak is 0. Otherwise it whould be equal to the number of losses, which is obviously not the case.

So your problem has maybe a different reason. Maybe some code in your script treats phantom trades differently?

For testing phantom trade behavior, begin with a very simple script that just opens phantom trades at random, and plot the loss streak variables in the chart. This way you can check step by step which part of your code may affect them. If the problem still persists, please post the full code here and I'll look through it.