We were on a Qatar Air flight from KUL to DOH and seated in the exit row. The flight steward jump seat was occupied by a FA during take off and landing.

After we took off, a passenger was allowed to sit in the jump seat during the flight, is this OK, legal whatever. It was kind of distracting to have someone looking at you for the whole flight (7 hours). Since it was late night and I slept most of it, it was not a major problem but I wondered what was going on?