Strorefront schedule: wall length changes

[Revitaoist]

I have a storefront wall and schedules for cd's.
The schedule parameter for wall length changes when a wall is placed perpendicular to the storefront,
and I can visibly see the little blue dot grip point jumping into the middle of the
adjacent wall and changing the schedule parameter for wall length. I have tried join options,
and disallow join, but nothing is getting my schedule, plan, and elevation all reading the same.
Any help would be appreciated, thanks. see attached

[patricks]

Set the end of the storefront wall to Disallow Join, then pull it away from the other wall, and drag it back to the face of the wall. Then the schedule will read correctly.