Trouble editing genres and labels in v1.1 -- strange UI clicking

I’ve installed version 1.1 and it went through flawlessly.

I’m trying to add genres to an album that has none. I may be doing something wrong, since this is new, but I go into album editor and edit fields. In the Genre area, I click on the box next to the pencil and scroll to find the genre. When I click on it, nothing happens.

A couple of times, the genre did get added, but usually nothing happens. Seems very inconsistent.

I’m running Roon on a late 2009 iMac with 8G RAM, OS X version 10.10.5.

Cheers, Greg

EDIT:

This happens in other blank boxes in the edit fields area. For example Labels. However, in Album Type blank box there’s a down arrow. When I click and scroll down and select a type, it works every time.