Extend Theme previews doesn't stay on same theme when using IE10 or IE9 in Windows 8

[lancewillett]

Originally reported in the forums: ​http://wordpress.org/support/topic/theme-twenty-twelve-single-post-preview-in-ie10

Extend Theme previews doesn't stay on same theme when using IE10 or IE9 in Windows 8, after clicking from index to a single post view.

What I expected to happen:
To continue previewing the same theme when I click around in the preview.

What actually happened:
The theme changes to Twenty Eleven after clicking

To repeat:

1. Open ​http://wordpress.org/extend/themes/twentytwelve
2. Click green Preview button
3. Once in the preview, click into a single post
4. See the theme change to Twenty Eleven

Notes:

• Breaks in both IE9 and IE10 with Windows 8; does not happen in other browsers like Chrome or Firefox; works fine in IE9 in Windows 7.
• Happens with any theme on Extend (tested with Twenty Twelve and Esquire)
• Example URL: ​http://wp-themes.com/twentytwelve?TB_iframe=true&width=1033&height=612
• Loading wp-themes.com directly (not in the lightbox) works as expected

[nacin]

"Loading wp-themes.com directly (not in the lightbox) works as expected" — weird.

[samuelsidler]

Migrated to ​#meta145.