I have just discovered that the"Open in New Tab" option does not appear for some drop down entries in IE9.
In the Favorites drop down if I right click on a folder there is an option "Open in New Window"
If I hold the pointer over the folder entry and then right click on one of the content entries then in some cases I see "Open in New Tab" but in some cases not, and in some cases I see both the new window and new tab options.
Would welcome any help or info.
Have attached some screen shots