Okay, sorry for the delay but I must admit I clean forgot about this one!
No Problem at all, but sorry for my late reply, because i wasn´t in the forum for a while.
Just checked the log and what appears to have happened is you missed the first waypoint by about 34 miles.
But that´s weird, because i got the the instruction to head for 180 degree just few seconds after i was airborned. So it can´t be i´ve passed a waypoint which is 34 miles away. (My AC is an A320 not a hypersonic fighter)
As you reached your initial altitude SID mode was deactivated and PF3 then detects you are moving away from the first waypoint.
That´s weird again, because i was initiated for an altitude of 18.000 ft by the tower and the clearance before. But the order to turn to course 180 came way before i reached that FL.
I could find the point if i missed a waypoint, and ATC gives me vectors to get back on track, but turning to course 180 brought me into the complete opposite direction of my FP.
Meanwhile i´ve had this several times again and i have just ignored this instruction, because once i´ve followed this instruction it took nearly 10 minutes until i was told to resume own navigation. At that time i was headed southbound for miles and miles where my flight should be headed to northeast. (for sure i´ve ignored the worried view of my CoPi aswell)
If i just ignore those weird instruction by atc, and just follow my leg it takes a little time until ATC gives "resume own navigation"