You've observed that after manually changing presets, your delay note setting occasionally, but not always, reverts to "Sync - Whole" even though your intended setting is "1/4 Sync." This seems to be an intermittent issue that doesn't occur with every preset change. You haven't used a footswitch recently, so you can't confirm if the bug also manifests through that method. This inconsistency in behavior suggests a software glitch rather than a user error. It would be beneficial to determine if other users are experiencing similar discrepancies.
mybkexperience