Let's say you have a custom field using the Labels field type. You've got a bunch of tasks with an assortment of labels.
If you select multiple tasks, and then use the edit custom field function, adding a lable to that custom field will overwrite the existing labels.
In most instances, I want to ADD to the existing labels, not overwrite the set of labels.
It would be fantastic if there was an option to toggle this functionality.
(Mods, pls merge if this is a duplicate of an existing request)