Changing Field of View different when solo

I have a framing transposer with POV aim and some Screen X and Screen Y offset. To implement a zoom, I'm using Field of View.

When the camera is solo, in play mode, or in the build, changing the Field of View has different behavior than changing it in editor non-solo even when it is the only vcam in the scene? When solo, it zooms into the real screen center, while when non-solo it zooms into the Screen X and Y offset center. If the zoom into the real screen center is the intended behavior, is there a way for me to make it zoom into the offset center?

Here is the project:
https://github.com/dsim7/FramingTransposerPOV