Pixel Map Overlay

Morning,

I have a few pixel maps in my showfile at the moment... 3 of them give me Mask and Overlay control when I look at them in Pixel Map Preview, and 3 of them don't.

It seems to be related to how wide my map is... anything 155 pixels wide and over seems to lose the controls. Is this intended? 

The pixel map adventure continues...

Vic

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