[W|0.6.532] Placing structures insta-removes trees

[nils]

Sorry if this is a dupe posting, but:

When you place structures and they are constructed, they will automatically override any plants that grow there. Colonists do move chunks aside, but trees for example "just disappear". Colonists should have to chop them down the normal way, then commence construction. (And of course this should place wood of the normal amount on the ground as well.)

(Lower limit: I think it's kind of OK that bushes get insta-removed, and grass can surely be built over, no problem, but it seems silly that trees puff away like this.)