We're having a problem accessing context and toolbar menus in the Editor using Firefox when the browser page has been scrolled. No problem with IE.
I'll include a link to a short video demonstrating the problem. You'll see that once the browser has been scrolled, the context and toolbar menus appear in different positions, and clicking an item on the menu has no effect; the menu disappears on mousedown. Once the browser page is scrolled back to the default position, the menus become functional again.
The problem seems to have manifest after upgrading the site to .NET 4.0.
The version of Telerik.Web.UI.dll is 2009.2.701.20. I realize this is not the current version of the editor and upgrading is in our near future, however, this problem has to be resolved immediately. Any help would be appreciated.