Bug in TRC writer?
I converted the 449_correct.edf to TRC with trcio writer and import it from brain quick. This info can be visualized opening 449_correct.TRC exam and doing click on the top left icon in Brain Quick window. 
Perhaps it is not so important for the demo, but check that the strings of dates, for instance: the recording start, can't that be affecting event detection? I will try printing that in python with the trc reader meanwhile.