CB

Appears to be due to the search input stealing focus and being unable to leave it. Hitting tab causes the select dropdown to close and move to the next element. When the search input is disabled it appears to work fine.

Consider changing to jQuery Chosen.

https://harvesthq.github.io/chosen/

This bug also impacts jQuery Chosen when search input is available. Arrow key navigation just outputs "Blank". Staying with select2 and attempting to find workaround solution.