Forge Dropdown Custom Field Not Support =,IN JQL search

Hi Expert,

I am trying to create a mutli-select Custom Forge Field which get dropdown option from SFDC and it’s working fine not 100% working fine.
When I am editing a field on view issue screen, all options get removed from the dropdown and get to select again .
how can i updated existing issue with the new field custom field value in bulk ?

=,IN JQL search is not available for this field ?

Is Custom Field forge app store issue data in backend?