This may not be true in other themes (& obviously browsers and settings will differ), but the diagram is getting resized based on the mouse-hover pop-up box, which seems to be overriding the original dimensions and causing the page to grow and shrink vertically. (Which then causes it to grow and shrink horizontally, because of the sidebar appearance.)
Can you hard-constrain the diagram height and hide any overflow from the pop-up? Or maybe set the diagram height based on a worst-possible-scenario height including the pop-up?
https://github.com/omeka-s-modules/Datavis/assets/28012148/93705b06-8f15-495f-a428-99b61aa2478d
This may not be true in other themes (& obviously browsers and settings will differ), but the diagram is getting resized based on the mouse-hover pop-up box, which seems to be overriding the original dimensions and causing the page to grow and shrink vertically. (Which then causes it to grow and shrink horizontally, because of the sidebar appearance.)
Can you hard-constrain the diagram height and hide any overflow from the pop-up? Or maybe set the diagram height based on a worst-possible-scenario height including the pop-up?