Insert iimage into OmniOutliner 5?

When I drag and drop an image into my OO doc, instead of adding the image, it adds a link. Quick Look informs me that the image is blank, and so the only way to view the link is to double click on it, which then opens it in my photo editing app.

Is this the extent of image support for OO Essentials? If so, would it be possible to get a preference to select our image viewing app?

I copy & paste PNGs, which does work. However it scales the image to the max width of the column, which is pretty ridiculous for small images. I love OO, but I REALLY wish they would add better image handling. Would also be nice to be able to insert PDFs inline.