UX improvement on Variable picker [simple]

Hello Devs,

It is one those little things…
When clicking on the variable picker button, the cursor should be placed automatically in its typing field.
For now, the cursor remains in the control field. So when typing, even if the variable picker mirrors what is typed in the control field, it does not filter down to what is typed.
Waste of time! We need to click again in the picker field and retype.
This happens hundred of times when building a site.

Thanks for considering.
Best Regards.