Hi Bob,
The problem is caused because the chord fingering type changes from 'Fingered on Bass' (in regs 1, 3, 4 & 6) to 'Fingered' in reg. 2 & 9.
For whatever reason, if Sync Stop is activated, changing the fingering type causes the style to stop, even if you are still pressing keys!
Perhaps you could simply change the fingering to 'Fingered on Bass' in regs 2 & 9 assuming that this still does what you want.
You could also try playing around with the 'Synchro Stop Window' which is set to 'Off' in all regs. Perhaps setting an actual value other than Off might work for you. You can access this by pressing Direct Access > Sync Stop.
Regards
Ian