The whole kybosh is slightly misaligned, the error becoming more noticeable as focal length increases. So the optical frame and focus patch are more or less OK with the 18mm wide angle and 18-55 zoom at its widest setting, but by the time you go out to 55 or use the 60mm prime lens the true centre of the image is at the bottom right corner of the patch. The error is the same at all distances - so it's nothing to do with the parallax correction.
My guess is that the parallax correction is applied electronically (and, by the way, has been improved by the latest firmware update) but the basic infinity alignment of the OVF is a mechanical one.
It's not a big issue - no one should expect perfect framing from an OVF - but it would be nice to be able to adjust out an offset like this.
I find the X100 OVF is better aligned - but then that has a fixed lens of short focal length.