Bug/Defect with multi-select 'shown as list'

I have a multi-select list on an Item record that is behaving very wrong in my opinion. Wondering if anyone else seeing this.

1. If you display the multiselect list in normal view, you can select and deselect and this will fire appropriate events for field change (which I need). If I refresh the screen without saving, the multiselect returns to its former selections (as expected - I haven't saved any changes prior to refreshing).

2. If you display the multiselect list to be 'shown as list', you can attach and remove, but this is where everything goes wrong:
a) No field change events fire when you attach or remove (I would expect they would since after all this is a multiselect field on the form just being displayed in a nice list format - it's not a sub-list)