Zoomed in, each view's photo reaches past its pane. The whole-frame renders
were drawn unclipped (only the window renders were clipped to their pane),
so the After's magnified whole-frame render covered the Before pane's margins
and the gap between the panes with a blurred picture, and the Before side
looked like it didn't fill its pane. Both whole-frame renders are now clipped
to their pane, like the windows over them; the Before / After labels stay
under the pane instead of moving off screen with the photo's bottom edge.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>