It’s an rare issue if some collectable item makes it too far underneath a blocking obstacle, in which case workers keep trying to reach it but fail.
It can be fixed when spotted by grabbing and dropping the impacted worker to another task.
This issue is out of current scope for current patch sprint.

This issue is going to be fixed in next patch.
No minion will rebell (nor get angrier) while being pinned to a device.
Cheers