If a softkey has an image defined, this is displayed on either the far left or far right of the key in portrait. While this makes sense for text, it looks odd for keys - the image should be centred on the key.

The reason I'm calling this a (minor) defect is because images are centred when used in landscape softkey, or in other buttons/labels etc.

While its possible to workaround this somewhat by using an icon with transparent area (to push the visible image towards the centre) this is not a good approach because:
a) The softkey sizes change on different devices
b) You also need to look for changes in orientation and change the softkey image for landscape vs portrait.