Scrollbars are not hidden when a div is hidden and overflow is set to auto or visible.
This happens with Mozilla on Mac only.
Test page Workaround is included
Reported by: Nate Hardt.
Mozilla | Reported on 7 June 2006.
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1 Posted by Philippe on 7 June 2006 | Permalink
In order to be complete one could mention the bug number as well:
it is bug 187435
https://bugzilla.mozilla.org/show_bug.cgi?id=187435