Is it possible to mirror a live section of one workspace so that it is visible in the current workspace as a window that can be moved around?
The other day I had a Windows 10 VM running on my Ubuntu 16.04 host that took a really long time to complete updating. I kept checking on its progress via Expo (Super+S) on Ubuntu. That got me thinking that this problem has most likely been solved already since tools such as simplescreenrecorder can be configured to record just a portion of the screen. However, I don't know the proper terminology to use for my Google search.
I'd like to see the 300×150 screenshot below in the form of a floating window (with live updates) in the top right corner of whichever workspace happens to be current.