To be able to see the Tooltips for MarkedZones you should retemplate the Chart Area and put the Annotations Layer within the Zoom Layer for example. Then by using TooltipService.ToolTip
property of the MarkedZone you can set custom tooltip. You can find a sample project attached demonstrating what I mean.
Additionally to make the text in MarkedZone wrapped (this way the overflowed text does not clips)
you can set the TextWrapping
property of the MarkedZone's Text Block to Wrap
. You can find this set in the MarkedZones Style.
I hope this helps.
the Telerik team
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