Buildings masquerading as trees

[G.K.]

I've noticed some odd behaviour in 2.3 and 2.4:

With scenery complexity and autogen buildings sliders set to minimum there are still some buildings present! If I turn autogen vegetation off as well they disappear along with the trees. It's particularly noticeable in cities.

It seems that some buildings think they are vegetation.

I'm not sure if this is important, intentional or an oversight.