Found a solution without needing to change the code in the titlescreen code. At the end of the text, use the @ key to set a restart point so that the scroll restarts.
Viewing post in Space Swarm 64 Version 3.2 (C64) comments
I just found that out as i am updated this very game to remove the other bug from the older framework also put some animated chars back ground animation with means i had to change the mapping a bit then started looking at the code for scroller and saw a commit about the @ bit, so just tested and it's working now.