Richt click on the command line, uncheck all the options in there, see if that'll help.
If not RESET your autocad or reinstall it.
OK, I see: you are disturbed by the new look and hidden "command:" and nothing more.
Sorry, if you want the 2012 look you'll need to drop back to 2012 😞 and unlearn waiting for the bottom-most line and look at the line above it for clues.
When AutoCAD is read for you to input something new, the bottom-most line says (all in gray, which means nothing is active)
TYPE A COMMAND
and when it is busy, it shows what action it is in the middle of (and all black, no gray) and does not show the above gray prompt.
So remember: GRAY means it's ready for you, BLACK means you are in the middle of something.