android studio ctrl + space opens documentation window

Question

I have updated my Android Studio to the newest version, but now when I call the auto-completion/suggestions with CTRL+SPACE the suggestion box opens bu

Answer 1

I prefer the quicker solutions...

Press Ctrl + Space and let the "Documentation" window pop-up.

1) Click on the Settings icon and uncheck all the options except "Docked Mode".
2) Now push documentation window to the right, so as to make it invisible.

With this even though with press of "Ctrl + Space", internally command will pass 
to open the Documentation Window but it will not be visible and interfere with the 
workspace.

I hope that helps. Happy Coding...