Win7-64 Acc 10.3.1.
I don't know the exact steps, but after changing the theme a few times in preferences and saving it I ended up with with a mismatch between the verse and its reference (my text is set to display separate verses).
When I tried to align the reference with the verse:
1) Right mouse click and 'set text pane display'
2) Click in the preview box (red arrow screenshot)
3) Scroll down
How can I get rid of this disturbing misalignment between verse and reference?