I meet a problem in preliminary pathway generation. Following disagram shows the left side orange unit is with mesh extending to the door but no mesh on the right side of the door in yellow unit. Target pathway cannot be generated from orange unit to yellow unit. I have checked the property of the door is in right setting and the wall is open at the door position. Is there anyone giving me some clues why the preliminary pathway is broken on the right side of the door? Thank you.
https://flic.kr/p/2njTpnd