Manual roof plane not seating roof rafter on top plate

[SkyTree-Greg]

Evening All!

I have an addition I'm putting on an existing house nestled between two higher walls. I drew a mockup of it as a test plan. I have the entire house drawn, but didn't want to use that as it has multiple flat roofs that were manually drawn and if I have "auto build" roofs on, everything gets wonky. (I wish there was a good way to do 1/4" sloped foam roofs with parapet walls as they are extremely common here in AZ). Eventually this roof will have a gable roof extending out from the front with a porch, but I'm just trying to get the framing correct on this part first. 

 

I've tried resetting whatever defaults I can find to make the roof structure the thickness of the I-joist, but I can't seem to get it to seat on the top plate. When I have flat ceiling on for the room, those I-joists sit on the wall correctly. I don't understand how manual roof planes don't snap to the top plate or why the radio button is unavailable to set the top plate height (120 5/8"). Trying different defaults (baseline) only seems to cut the i-joist off flat underneath at the fascia instead of dropping the entire joist. Also seem to have something under the roof I-joist which I think is drywall, but not sure why that is there if there is a ceiling plane below it that has drywall. 

 

I haven't posted in awhile.... hoping it attaches my signature with all the computer details. If not, I'll reply as a comment.

Thanks in advance.

Greg

Chief Talk Section framing.pdf Chief Talk Section.pdf Test_2025_12_02.plan

[SkyTree-Greg]

Just as a side note... I drew the manual roof plane as I have in the past. Select roof plane, drag along the exterior edge, and drag it up the slope. Never had issues like this before and I have been using Chief since it first came out.