Solved! Go to Solution.
<!--[if IE 7]> .esriOverviewMap .logo-med, .esriOverviewMap .logo-sm, .esriOverviewMap .bingLogo-lg { display: none !important; } < ![endif]-->
<!--[if IE 7]> .esriOverviewMap .logo-med, .esriOverviewMap .logo-sm, .esriOverviewMap .bingLogo-lg { display: none !important; } < ![endif]-->
This is a bug. To work around it, add this inside a style tag:<!--[if IE 7]> .esriOverviewMap .logo-med, .esriOverviewMap .logo-sm, .esriOverviewMap .bingLogo-lg { display: none !important; } < ![endif]-->
We'll try to get this fixed in the next release.