Linked panes not scrolling together

I may be mistaken, but I believe previous versions of SAB where a diglot was used with the two pane view showing different translations would scroll together. That does not seem to be working in my latest build using 11.0.4. Here the top pane has been scrolled to show verses starting a verse 6, but the bottom pane has not and doesn’t move regardless of how far I scroll in the top window.

I do have the “Link panes” box checked in the Books > Layouts.
Am I missing something?