There are two things going on at the bottom for text events.
1) PRESS ENTER TO CONTINUE
2) Press Enter for Next, Backspace for Previous, Space for Last
In the first one, this is a button with a highlighted letter 'N'. If you click it, press N or press ENTER, it contines to the next page, if applicable, or out of the event if at the end of the text.
In the second case, this is not a button, this is a list of options. There is ineed an issue with it not appearing on the first page of texts with more than one page, and a second issue that if you click it, it is as if you pressed ENTER.