Error when selecting a list from admin > forms > layouts editing a list box field

I was customizing some form layout, if I need to update a list associated to a list box field, when I click on list cell,

it will open a select list popup, and I get this error

I have to start typing, and it will show this error again, until I can select the list I want.

I am running v7.0.1 on Ubuntu, this error can be replicated on openemr demo 7.0.1.