Can Save Only By Pressing Touch Bar - 2020 MacBook Pro (Intel)

I am working on a 2020 MacBook Pro and am a heavy user of MS Word for Mac through an MS 365 license.  My problem only seems to happen in Word.  Otherwise, I would suspect some of the hardware.  What's happening is that I go to save a document through "Save As" on the File menu.  I get a dialog box with the last file name in the file name field.  However, I cannot scroll through the directory at hand to pick another name or make sure I am using the same naming convention.  It is greyed out.  I can go to the file name field at the top of the dialog box, but it will not let me delete the entire file name.  I have to click on the name and delete characters and replace them with others.  Then, when I go to save with Command Save, I cannot save.  I have to press "Save" on the MacBook Pro Touch Bar at the top of the keyboard.  

  Separate from this, I sometimes have difficulty getting the MacBook Pro keyboard to translate to letters or numbers on the screen.  It is as though the keyboard needs to warm up or something.  After typing spaces into the authentication or password field for awhile, the spaces finally show up and I can delete them and type in my password.  

Any idea with with constellation of symptoms what is going on?  

Carol Mattick