Multi Heli retires earlier than set in "Despawn timer"

Hi,

I'm using Multi Heli granade (2 different tiers), and I have my "Despawn timer" set to 3600 and 5400 for each tier.

However some helis retire at 30minutes sometimes (instead of expected 1h or 1.5h).

I have 2 multi-helis in one tier and 3 multi-helis in second tier.

What have you got the heli.lifetimeminutes?

try increasing it.

Tried this, set from 30min to 60min. Still sometimes called helis despawn after 3minutes of being spawned.

Also noticed today this red error in the console ( maybe could be related ) 

Changed Status from Pending to Fixed

Changed Fixed In to Next Version