Alt+ Super+S Not working on Most Versions of Live CD

[Al Puzzuoli]

Hello,
I'm finding that I am unable to  start Orca on most versions of the 
Ubuntu Live CD. After I hear the Tom Tom sound, I press alt+super+S, and 
nothing happens. This has been the case on almost all versions of the 
live CD I have tried, except for Ubuntu Mate 16.10. I've tried Regular 
Ubuntu 16.10, Regular Ubuntu 16.04, Ubuntu Gnome 16.04, all of which 
have had the same issue. I also just tried several flavors of the Zesty 
live CD, and experienced the same problem. Questions:
Is this a known issue? If not, should I file a bug? If I do need to file 
a bug, where should I file it? The issue doesn't seem to be limited to 
any  single release. Meanwhile, are there any workarounds I can use to 
get the screen reader going for now?
Thanks,

Al