When in the storage lectern GUI if you click in the JEI search field it displays a cursor in the field, but if you start typing it types into the storage lectern search field and not the JEI search field. To be able to type in the JEI search field you have to click somewhere outside of the GUI first and then click in the JEI search field before typing. Not a huge issue but over time it becomes rather annoying.

I confirm that this happens in fact. Looks like a conflict between JEI and Ars, no? and Ars takes precedence over JEI from the looks of it