pre-selected disabled items are removed by "deselect all"

[BoboMcKane]

have the same problem, when calling deselect_all also the disabled options in the "right" list are moved to the "left" one, while remain disabled. When calling select_all after that, this elements remain in the left list.
Is there a solution for that case, since the post is more than 3 years old??

Originally posted by @BoboMcKane in #259 (comment)