Global keyboard shortcuts.

You can use this shortcuts from anywhere even panel is not open.

Open Action popupAlt + A
Open thumbnail popupAlt + T
Jump between recent visited tabsCtrl + Q
Switch to previous windowAlt + Z

ℹī¸ Note:
Global shortcuts may not be configured automatically for some users.
User need to visit extension shortcut setting page.
Copy and paste this url chrome://extensions/shortcuts on browser address bar.