Google Chrome	64.0.3269.0 (Official Build) canary (64-bit) (cohort: Clang-64)
Windows 10 Enterprise Version 1607 Build 14393.1770
NVDA 2017.3
JAWS 2018.1710.42 private preview release

A user submitted this issue which I have paraphrased: 
"I couldn’t get to the list of available cast devices using JAWS. I have a touch screen so I can locate it by touch if necessary. I still cannot access the list using JAWS and keyboard commands. I have multiple Chromecast devices and I would love to be able to do this on any of my PCs."

For this first round of tests I did not have a Chromecast device handy. I'll update this bug once I get access to testing with a device. 

Here are the steps I took to reproduce it:
# Launch JAWS and Chrome Canary
# Navigate to the Customize and Control Google Home menu (the icon on the toolbar)
# Navigate to "Cast..."
# Read the text in the dialog that appears
Expected: all text is read
Actual: all text is read including buttons and dropdown items 

# Close JAWS and open NVDA
# Repeat the steps to get to the Cast dialog
# Read the text in the dialog that appears
Expected: all text is read
Actual: all text is read including buttons and dropdown items 

In both cases, the initial focus was in different areas. I will also check this once I get access to a device.