sbbslist.js command prompt not always at bottom of screen

Before the "More efficient screen updates" commit of Nov-19-2019, the Synchronet BBS List command prompt was always displayed at the bottom of the terminal, as shown in this screen capture: https://1drv.ms/u/s!ApZPvWcrEaRQw6Q7iviZNsL6_iMWiA?e=g2zply

Now, if the list is not as long as the screen (e.g. as the result of a text search), the prompt is not displayed on the bottom of the screen, as shown in this screen capture: https://1drv.ms/u/s!ApZPvWcrEaRQw6Q1XOS2_8-_RGoLjg?e=4Yyeka