Woodland Explorer map leads to nowhere

*What I expected to happen was...

The Woodland Explorer map I purchased would lead to a Woodland Mansion.

What actually happened was...

There was no structure at the indicated location. However, when I searched the entire map area I did find a swamp hut (see screenshots. Hut is purple pixel) although it was some distance away.

Seed: 3412756 in Creative mode
Created after polar bear update but pre-Explorer update. The location the map directed me to was significantly further from where I had travelled before. Over 100 locator maps away in a straight line