Whatever happened with the last two updates. The issue resolved itself. In case it wasn't the update. These are what I did, and if it happens...
I support this option! +1
Gave that a try, and the issue persists. I didn't have the issue prior to adding the 3rd Device, and naming it Chromebook. In fact, I was fine...
[One of your Join devices is already named " ... " What do you want to name this device?] pops up upon opening my browser on both my Chromebook...
Separate names with a comma.