Unfortunetaly yes !
Positioning after a Flight Duty period has no practical limit at all. Although the time spent positioning does count as "duty", it does not count as "Flight duty time" after a flight or series of flights. This is not the case when positioning before a flight duty period when the FDP starts at the reporting time of the positioning sector. Positioning does not count as a sector for FDP purposes ( unless a split duty is involved with a positioning sector in between ).
The subsequent rest period is calculated from the total duty period prior.
There is a maximum flight duty period (FDP)
There isn't a Maximum duty period. (Outrageously in my opininon)