Mike shouldn't this be in XUL or is it us miss using the component ?
Irving: thanks, adding a QueryInterface: XPCOMUtils.generateQI([Components.interfaces.nsITreeView]) to my tree implementation fixes this! Probably the mailnews error is the same.
Can anybody still see this? I think I saw it ocassionally, but the STRs are probably not that easy today as originally in comment 0.
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