Dollhouse of Horrors + Weaver of Blossoms (double-sided cards) copy token did not have haste
I used dollhouse to make a token copy of weaver of blossoms (which is double-sided with Blossom-Clad Werewolf on the reverse side) and it did not have haste. Single sided cards did have haste as expected.
Use Dollhouse of horrors to make a token copy of a double faced card. The token does not have haste.