When displaying a poster screen with list style "flat-episodic-16x9", any posters that are 4x3 in resolution are distorted when they are NOT focused. When they ARE focused, they are properly pillarboxed thanks to the "scale-to-fit" display mode.
It seems like a bug that the non-focused images are not treated the same as the focused images. Most of our content is 16x9, but sometimes there will be 4x3 content and it's odd to see them stretched when they are not focused.