The images have both left and top set to 10 and width/height set to 48. The row has a static className set.
In 1.2 all is well:
in 1.3, the images jump around on load:
Interestingly the labels also move, which leads me to believe the entire cell is moving, though it could just be because the labels left is being set to:
I've also seen something like this occur on the KS demo in BaseUI > Views > Table Views > Table View Options (examples/table_view_options.js)
Where clicking a row causes the labels to jump to the right a bit.