1,000 guests queuing limit?

[HarryLUFC]

Just wondering whether this is a bug or if there is an actual limit on how many guests can queue for a ride?

Made a new coaster and it is very popular amongst guests(shown below) and ive had to extend the queue length several times, but when 1000 are queuing for the ride every guess just turns away at the queue start. Is there a way to change this or anything? Believe i could get 1.5k guests queuing for the ride, or atleast want to aim to get more queuing for the ride than guests walking.

 

Any response is helpful