Two of us have tried it here (macOS 10.14 and 10.15 ; Drafts 19.0.6, which was updated here yesterday – without the Pro subscription) and it works at this end. This suggests that it’s a screen scripting timing issue.
In the Get Address script, on the line that says “Repeat 5 times” , could you please try replacing the number 5 with bigger numbers, such as 10, 15, 20… to see if it makes any difference? thanks.
Graham wrote in July about Hook’s Drafts script:
I also improved the Get Address and Get Name scripts a little, and noticed a shortcoming, that they don’t work if the note is open in its own window. It is due to what I consider a fault, so I’ve reported it to the developer.