[0.16.51] Landfilling after placing walls retains transition

[Sparen]

In the image provided, I first placed a blueprint, then filled in the blueprint, then landfilled in the surrounding area to make space. However, the transition between the wall and water remained even after landfilling.

macOS High Sierra, multiplayer vanilla map, host. If needed, I can provide the save file as well.

I apologize in advance if this is a duplicate.

[Loewchen]

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