Enabling a taggerscript as simple as "$noop()" causes many or all fields whose values span multiple lines to become "corrupted".  The corruption can be theoretically be undone by calling $unset on each field, or else using the UI to Use Original Values, but this corruption should not be occurring in the first place.

e.g., this tagger script undoes the corruption (and the corruption affects these fields):

$unset(itunnorm)

$unset(itunsmpb)

$unset(itunmovi)

$unset(lyrics)