I just tested this on Google Maps. Dropped a pin, copied the plus code from the details section, pasted it again in the search box and hit Search. No results!

I just tested this on Google Maps. Dropped a pin, copied the plus code from the details section, pasted it again in the search box and hit Search. No results! Tried it a couple of more times for slightly different locations, but the same issue. This makes it seem like it’s not ready for prime time.