Question-and-Answer Resource for the Building Energy Modeling Community
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I ran into this problem too. It is mainly due to the way you model your surfaces. It occurs for my case when I have a single large surface that is intersecting with multiple smaller surfaces. I have illustrated the case with a sketch below. Hope it helps.
https://drive.google.com/file/d/1tjZ6h6Xif3aAzWNasvsScZm1THCnlLdR/view?usp=drive_link
