I have been having a bit of trouble getting the CP to behave as expected in IE7/8.
The site I am working on - still in development - was started on EE 2.40, and I was planning to use Wyvern. However, the client noticed that Wyvern fields were disappearing on page load. So I upgraded to 2.5.2. (I upgraded Wyvern, too, but have since uninstalled Wyvern and am currently using the native RTE.)
Now the situation is:
IE8: RTE fields are appearing. But the file field in upload forms is broken. Please see attachment.
IE7: RTE fields do not display, file upload broken as in IE8, and also the site’s Matrix fields have stopped working (Matrix image thumbnails do not display)
No problems in IE9 - or any other browsers.
I have tried disabling accessories and extensions, but this doesn’t help. I also re-uploaded themes.
Above all I really need to get file upload working in IE8, as there will be large number of site admins, and some are bound to be stuck with old IE.