Comment 10 for bug 345777

simple test case of a button with "visibility: inherit" inside a block with "visibility: hidden"; the button is hidden on every browser out there except IE 8.
the bug is reported here: <https://connect.microsoft.com/IE/feedback/ViewFeedback.aspx?FeedbackID=442805>.

if you are willing to work around what seems to be a defect in IE 8, then a possibility would be to remove that "visibility: inherit" style.