I have no idea how that got there. I can only imagine it must be a quirk of Organic Maps. Curiously it was the only change in an edit.

Do you know where the Tutty Hill name came from (Heckington)?

@ZeLonewolf: Did you already update the riverbank to water=river?

The Jennings River was already marked as a riverbank so I extended it. I can also add a river tag. Do you know why the maps have large rectangular areas that are extensively mapped with nothing outside?

Yes please

Then they should probably be natural=wood