I think I am having a problem with my OVF that is related to the issue of this thread. I have a non-Fuji 90mm lens attached to an X-Pro2 with Fuji's M-mount adaptor. The OVF shows not one but two brightline frames. Both are the same (correct) size but one is bright and has the "focus zone" box at its center, and the other frame is dimmer and offset from the brighter one by about 10 percent of the frame's dimensions. Both are sharp, one does not appear to be a stray reflection or something like that. The dimmer frame does not have a "focus zone" box associated with it.
When the camera is in landscape orientation the dimmer frame is to the right of and below the brighter frame by about 10%, and when the camera is in portrait orientation this means that the dimmer frame is now below and to the left of the brighter one. The dimmer frame gives the correct framing (the actual image is slightly bigger than what this frame shows but it is centered properly). In the portrait orientation, the brighter frame cuts off the top and shows more at the bottom and left side, just as Harold experienced.
Does anyone know why there are TWO brightline frames? Is there a way to fix this problem?