@Gianluca make sure the trailing stop is above the breakeven. Makes a difference too.
Using above codes, then you have to use “not on market” as entry condition.
However, if you have long position and get a short signal you want to reverse immediately right, but that maybe get’s skipped now since it’s waiting for the active trade to first hit a target (stoploss, trailing-stop, breakeven etc) because of “not on market” condition.
If you use those codes, and do not use “not on market” as entry criteria, you may get unexpected results.
That’s an issue and influences WF and optimisation results. I think it creates fake WF results! (but perhaps looking nicer)
