I edited these trees while focusing on fixing incorrect circumference values in imports (e.g. see also: https://community.openstreetmap.org/t/possible-error-in-linz-tree-import/113040), so it's definitely possible other errors from the import went unnoticed. I didn’t catch this one at the time. The right person to ask is the user who originally added the tree, but I see you’ve already reached out. He did the initial import, I just converted one unit to another.