Thats a bit of a design gap, isnt it?
There must be a proper solution to that as a mower going around in circles and eventually going dead isnt good enough really. The whole idea is that you can let it at it and not have to keep rescuing it.
Any input from the dealer or manufacturer? Or the manual?
I have had this setup like basically all of last summer and it was no problem.
The mowers navigation is really simple, they basically have no idea where they are, they drive til the find the wire and follow it anti-clockwise til it finds home. When it finds the large island it doesn't know it's not the actual boundary. The only thing it could do software wise if there is was a max time to go home, and if it spent more than that going home it searched for a new boundary