Sivach, you need to increase the MaximumRisk (make it =1) or you need to play with more initial balanse. Else the the lots you play are not enough to reach the profit target. When MoneyManagement=true lots are autocalculated and

lot=NormalizeDouble(AccountBalance()/10000,lotPrecision)*MaximumRisk;

So if you play with very low account balance and low MaximumRisk will be very difficult the profit target to be reached. That`s why when you have only one placed order the trailings don`t want to close it - the profit target is not reached. There`s no bug, just increase the MaximumRisk or Initial balance or both.