Can not select values when adding automation for Zen37

I’m trying to create an automation with a Zen37 remote. When I select the device, and then I select a trigger, I’m offered a drop down list of values. When I try to select one of those values, it refuses to fill in the box:

I’ve tried Chrome and Firefox…What’s going on? Why won’t the selected value populate?

So this appears to be a GUI bug. I can select the value I want, but even though it doesn’t show in the GUI, the automation works and the value shows up in the YAML.

Issues and bugs are reported Here: