Keynote 6.6 Jpeg export incorrect resolution
When exporting a Keynote file as images (whether exporting to Jpeg, PNG, or TIFF) the images are exporting at 1024x768 instead of the correct widescreen resolution 16x9 (Keynote is essentially letter boxing the image so it is not stretched). This has just started since the latest update-- it's worked correctly for years, this is the first issue I've had. I've changed the document properties and other settings to see if there is some setting that changed somehow. I've looked and not see if Apple has a fix coming for this and have not come up with any matches.
MacBook Pro with Retina display, OS X El Capitan (10.11.1)