Wrong UIActionSheet layout in popover

I’ve got an UIActionSheet with a single button that I show in a popover. In landscape mode there is a plenty of space around the popover, so that it displays with an arrow 开发者_运维问答in the middle and everything is fine:

In portrait the popover has to be displayed with an arrow on the right side:

Now the button looks a little bit too low and little bit too far to the right (it’s not the cropping). Have you met this behaviour? Did you manage to fix it?

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Looks strange?

Of the top of my head you could send the button a

[button sizeToFit] 

message after it has been added to the popover. It's a long shot.