forge 1.8-forge11.14.1.1412
radix core 2.0.2.1-18
MCA 5.0.6-1.8
windows

this is what a door looked like when i selected the "i have a family option"
edit:it only happens when mca generates the door on the house

MCA for 1.8 has been updated, give that a try and if the issue occurs come back.