Planar Texture Disappointment

So picture this: My new build has one roof, with a triangular insert (filling in the area under the peak), and a smaller roof, over a bay window below it.

I check "planar" for the triangular insert above, and coolness! It works.

I do the same for the smaller triangular insert below, and coolness! It works.

Until I move my view to the side. The the smaller triangular insert goes wonky. It looks straight only if you are looking at it straight on. But not the larger one on top. The texture on it still looks straight from the side. Just the smaller one below.

??

coco

Coco do you have a screenshot or the co-ords for an in world example?