Featured Products image not showing fully

[cst3124]

the image only showing half on featured product widget when only 1 product selected.
this situation happened only when:
1. Only 1 product selected.

showing well if the selected product is >1
Not theme caused, it happened too on default theme.
is it caused due to my image size ?

*image size is 500x500

[Jim M]

The image is set to fit the container with no overflow so if the image has different proportions than the container, it will be cut off.