Question: Maple 12 - change in labeldirections

In Maple 11, using labeldirections = [horizontal,vertical] was enough to display the y-axis label vertically.

But in the Maple 12 version this no longer changes the label to vertical, it still displays as horizontal and just cuts off the remainder of the label.

Has there been a notation change?  How can I now display the label vertically in the new Maple 12?  Thanks.

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