Steps to reproduce

• Open a map on a wiki with the nearby feature
• Enable nearby
• Click on a dot that's close to the upper end of the map to expand the popup

What happens

• The popup opens above the dot and scrolls into view
• Scrolling stops at some point and the popup is cut off

Note
This seems to happen only when images are present. The popup scrolls into view when the images are still being loaded. So the finale size of the popup is not known to the browser when the scroll into view is supposed to happen.