I was having trouble with the last column of a table not having the text wrap as it should. And often I couldn't make the table wider -- the marker to resize on the right wouldn't appear, and it would be darker than the usual column boundary. It's been a pain for a while until I found a workaround. The problem is easily duplicated:
create a 2x2 table in a new note
put some long text in there that needs wrapping, especially in column 2
shrink the window's width past the right edge of the table. The table will retreat in size leaving a margin on the right and a darker edge