Hey guys

Quick question.
Is it normal for oil to leak out of the oil pump outlet lines after going for a ride.
I have clear lines between the pump and carby. After I go for a ride, the next time I have a look at the lines I can see half of the tube has no oil in it (half closest to the carby)

If they are meant to retain their prime is there any suggestions as to why one of my lines are leaking?

Thanks
Scott