This occurs in both v11 of Foundry with v1.13.1 of zoom/pan, and v12 of Foundry with v1.14.2 of zoom/pan.
If you open the Configure Scene window and go to the Grid Tab, and click the little ruler tool next to the Grid Type dropdown, change the Background Image Offset by any amount, and click Save Changes, it causes the Configure Scene window to expand wildly and the formatting goes crazy.
This occurs in both v11 of Foundry with v1.13.1 of zoom/pan, and v12 of Foundry with v1.14.2 of zoom/pan.
If you open the Configure Scene window and go to the Grid Tab, and click the little ruler tool next to the Grid Type dropdown, change the Background Image Offset by any amount, and click Save Changes, it causes the Configure Scene window to expand wildly and the formatting goes crazy.