This is not odd (since that is a remain how the 7 days timer originally was intended to work, block after placement and after getting traded a house), but inconsistent and annoying, since you can place a house while homeless.
Inconsistent, because (I think it is still correct) you get the 7 days block for placement/trade also, if you had another house, placed and removed both houses from your account or in the situation you placed, demolished or traded house and want another house get traded to you after being homeless again.