Hi,
This might be not the first time, I tried to search "Monkey" but nothing found on 1st page and no need to check for the next page.
This issue was probably way back RBF. And most common at Closed Mine as the landscape and design of the map has many obstacles.
But I hope you can do a little fix on this. Like make the Pet auto return when jammed after several seconds? Maybe 30 secs is enough.
Thanks,
Ashy