On the long list of changes that have been done to "FIX" JSW, you have left the erroneous square from the title screen unchanged. Inside the lower portion of the letter "S". Is a diagonal square that has the top part green and the lower part black. This should be - top part green lower part blue.
That's already been brought to my attention by Richard Hallas. :-)
POKE #98D2, #0C fixes it.
Edited by IRF, 03 October 2017 - 07:17 AM.