Issue Summary

When filtering on a Label or Tags custom field, not all options are visible although we can see the custom field value on the plan for a specific issue

Steps to Reproduce

1. create a custom field of Type "Labels" or "Tags"
2. add the custom field to a project
3. add values for this new field for different issues on the project
4. on your Advanced Roadmap plan - add the new custom field under Configure > Custom fields so that you can show and filter this field on plan
5. attempt to filter by this field

Expected Results

On Advanced Roadmap the filter should show the list of the labels for this custom field, or if the list is long, it will show the value when doing a key search

Actual Results

On Advanced Roadmap the filter might show a partial list of the labels for this custom field and even when typing the name of the label it does not show. Looking at the plan itself - there is no issue with the field and the label is visible (you can add that custom field to your view and will see the value)

Workaround

The workaround is to update the Labels or Tags from the edit issue screen instead of updating directly from the plan.