Unity alt-tab application switcher in Ubuntu 16.04

I'm using alt-tab to switch applications on Ubuntu 16.04 and fully updated. There seems to be a screenshot in the way of the usual icon of the apps I'm tabbing through. Then, the application being switched to is the screenshot one not the icon.

How do I turn off the screenshot overlay, and can you please explain what is causing this?

1 Answer

It's due to Unity and Compiz's application switchers both being enabled with the same keybinding (alt+tab).

You can disable the Compiz Application Switcher by:

1. sudo apt install compizconfig-settings-manager

2. Open the CompizConfig Settings Manager by launching "ccsm"

3. Select "Window Management"

4. Uncheck "Application Switcher"

Now, only Unity's application switcher (Desktop > Ubuntu Unity Plugin) should appear when you press alt+tab.