Solved SMS Window in Chrome not being drawn

Noticed today that when a text message comes in and I see the pushed notification in Chrome, if I click it, it no longer breaks out a larger window for the SMS. It draws the controls at the top, but not the window, like the attached screenshot (everything in red is drawn by me).

If I maximise from those controls I see the normal window content in a fullscreen window, but going back down to a normal window just gives the controls again, and no actual window.

I have rebooted my PC, and the issue persists.

Using Join 1.8.3b on my Android device, and the latest Chrome extension which is 1.7.9.

 

Deleting the Chrome extension and then reinstalling it fixed this issue.