Just keep typing. It doesn’t matter that the lines above are rendered — when you finish the line it will be added to the table.
In my test, the table turned to code view once I started typing text in the second cell. But that rendering doesn’t affect whether the text you’re typing becomes part of the table.
Oh I see, I like that, but unless you know that’s happening its very confusing! Even more confusing, it switches back into “raw mode” only when you start the contents of the second column.
Thanks, I was about to give up and go back to notes