We are aware of the issue with missing BaseLines when ShowBaseLine="true" in RadTabStrip
. We already fixed it and the fix will be available in the Q3 2014 SP1 expected in the beginning of December.
As a temporary workaround, you can use the following CSS in Outlook skin:
Attached you can find the sprite image for Outlook skin.
Please, excuse us for the inconveniences caused by this issue.
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