Code disappears after save

I tried both. The only thing that seems to solve it was toggling the code view. 

Did you try updating your drivers to the latest version as suggested to see if that helps the issue? Also did you try logging in as another user on the computer to see if the issue persists on a new user account to rule out any OS user issues?

That didn't work either. Only toggling the code view seems to solve it. 

After saving file with Ctrl + S, use F5 to refresh the display.

Does that work?

Also I am not using more than one display and and I toggled between those modes and it was all the same.  I have no idea why toggling code view makes it work but, I'm not complaining.  Hopefully this thread will help someone who's having a similar issue. 

Yes.  Also within the past hour I have found a solution that is way easier to replicate. Everytime I open a new file it still does this,  however, if I go to View and toggle Code view twice everything works like normal. I have no idea why. 

Where are you saving files? 

Are they saved to your computer's primary hard drive?

Can you try running DW in another user account and see if the issue persists to rule out an OS user issue?

Toggle between Design & Live view with Ctrl + Shift + F11.

I can't reproduce it on my end so it's not a bug. 

Does your CPU and GPU meet min-requirements?

https://helpx.adobe.com/dreamweaver/system-requirements.html

Graphics display is controled by your GPU and graphics drivers.  Have you updated your drivers from the card manufacturer's website?

Are you using more than one display?