Is there a maximum number of queues

[soleilblanc]

Hello,

Is there a maximum number of queues one can configure? i would have expected not or some fairly high number.
I currently have 2 pipes with 4 queues each for a total of 8.

When i try to add more in the gui, when i click save, nothing happen.

I've tried chrome and firefox, disabled add blocker on both windows 10 and osx.

Thank you for any help provided

sol