Image Select is an extension of Chosen, a jQuery plugin that makes long, unwieldy select boxes much more user-friendly. It provides image support for Single and Multi select HTML tags.
Thank you @rsiddle for this, .. it's a known issue with Chosen, check #19
There's a pending PR from @iamcal to fix this, harvesthq/chosen#2373 (reference)
Once this is fixed in Chosen, will update the extension,
I am finding that when you start to filter the results, it removes the chosen image.
When removing the filter, the image is displayed as expected.