NOTE The keyword here is \"default\". I know I can hit escape and the default behavior gets aborted. I don\'t want to hit the escape key every time the ID
Visual Studio 2019 Pro -> Options -> Text Editor -> Advanced -> disable "Responsive code completion"
This disables Completion Mode, but doesn't take effect when VS is restarted. You have to enable & disable it again after each restart, which is worse than using the Toggle Completion Mode menu option.
Since it is in Options, it is probably supposed to be a permanent setting.