Multicam Angle View windows not scaling correctly.

I've got a 4 camera multicam set up, 2 of the cameras are UHD and 2 are HD. The project is HD and I'm using proxy video while editing.

Sometimes after I switch angles, the images in the angles view jump to double size so I'm only seeing the lower left 1/4 of the view. And it does this for all 4 views. If I keep going sometimes things will correct at the next edit, sometimes not.

I just tried the other settings and in 2, 9, and 16 angles the views are the correct scaling. It's only in the 4 angle view that it is screwing up.

Any suggestions on how to get the views to be there correct scale all the time?

I can't say I've ever seen this happen before.

Lew