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

It's now long ago since this was reported, but the log looks like it is failing to even find the installation folder
"DirectoryNotFoundException: Directory 'C:\Program Files (x86)\Steam\SteamApps\workshop\content\230190\580198850' not found."
Did you move steam from one drive to another?
If so reinstalling should fix it. Right now the installation points to a non existing folder.

This issue will be fixed.
The floodfill to find the same terrain will not be allowed to spread through the map border.
Thanks for letting us know.