Nope, that didn’t work. I still ended up with a solid blob.
 
First, I had the number and the bubble on the same layer (“text”). So, I tried separating the number and the bubble on separate layers and rerunning the Hatch. When I looked at the separate layers, the bubble is filled solid but the number is not.
 
I have :
Version: master
Compiler: GNU GCC 4.8.0
Qt Version: 5.1.1
Compiled on: Aug 30, 2013
 
Running on Windows 8.
 
Joe Gaffney
 
From: Mike Hayes [via LibreCAD] [mailto:[hidden email]] 
Sent: Thursday, May 14, 2015 2:44 PM
To: jgaffney
Subject: Re: Number Bubbles
 
First explode the number. Then, using the Hatch command, select the circle and the exploded number with a window. 
If you do this with the number 8 for example, the hatch command will fill the region between the circumference of the circle and the outer contour of the 8 and also the two holes inside the 8. 
Mike