C:\Program Files (x86)\Microsoft SQL Server Management Studio 18\Common7\IDE
If you cant find it, right click your shortcut you use to open SSMS and go Properties > Open File Location
Once you have found this, you will also find a file called Ssms.exe.config, open up a Notepad in Administrator Mode, and edit this file
You will then need to find an xml tag called <AppContextSwitchOverrides>, and APPEND (not replace) the following exactly:
;Switch.System.Windows.Interop.MouseInput.OptOutOfMoveToChromedWindowFix=true; Switch.System.Windows.Interop.MouseInput.DoNotOptOutOfMoveToChromedWindowFix=true
Via: https://docs.microsoft.com/answers/answers/274201/view.html
