The behavior you're seeing is because of Intellisense probably. When you type the left parenthesis it auto puts in the right parenthesis. This is to avoid forgetting about them. But when you enter a left paren then Intellisense kicks in and provides you a series of options based upon what is currently available. Intellisense has gone through some (not necessarily good) changes in VS 2019 and it really wants you to select from it. So when you press the Intellisense completion keys (tab, enter) then it inserts whatever is currently selected.
For C# the option to auto show completion list for arguments is marked as experimental and you can turn it off under Text Editor\C#\Intellisense. For other languages I don't know about the options.
Of course you can press ESC to get out of Intellisense and then tab/enter to move on. Alternatively you can change the Intellisense completion characters (I believe) but I don't remember where those settings are. However this may be more distracting than is worth it.