League vendors still accessible after leaving the Viridian Wildwood

League vendors are still accessible after leaving the Viridian Wildwood, allowing you to release your Wisps into the map, then still spend them at the vendor.

I accidentally discovered this while looking at the offerings of a vendor in the "darkness" just outside my scope of discovery.

I've uploaded a video for clarification: https://imgur.com/a/dbf1nGT

This specific situation is probably not common enough of an occurrence to enable problematic or consistent exploitability, but there might be some other ways to exploit this waiting to be discovered. It might be a good idea to prevent purchasing outside the Wildwood by nullifying the number of Wisps a character has collected upon exit or something, if not just to be on the safe side.

And I'm not sure if this is entirely necessary, but here's the screenshot from the bug report (reference number 3,261,034,551):