Unable to focus "dataset values" input w/o opening the pop-up code editor

This is about the editing datasets in the Chart component :chart_with_upwards_trend:

If I click on the "dataset values" (or "dataset name") input, the pop-up code editor shows up, and it makes not sense. I don't want to open the pop-up editor -- if I wanted to, I'd click on the "square+arrow" button that's at the end of the input. I just want to edit the value and move on, but it won't let me.

Here's a shot of the input field in question: