What you need to do is soft-group the text with the shape and then apply the mouse-over link to the layer for both text and shape.
As the text is not linked and on top of the shape, it obscures the link.
Soft-grouping is better as it renders text as text and the shape as an image.
It also allows you to add roll-over effects (like a button) to make the the link discovery more visual.
Acorn
Acorn
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