Can't edit drop shadow properties - why?

Applying contour to a text and trying to apply a drop shadow afterwards, the drop shadow properties can not be set.

No matter what item you select in the Object Manager, the drop shadow toolbar's controls are all disabled.

PS: I just noticed this is true for the drop shadow tool in CorelDRAW X6.2 in gereral. I'm not able to edit any of the drop shadow properties.

What's going on here?

 

 

Here's a screenshot demonstrating the problem:

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