Clicking "Remove Item" : wrong display

Hello,
I'm using SHS and multiple field.
When I remove an item, the label in select list is still the old.
For example, I have 3 items (with a SHS field) : Item_select1, Item_select2, Item_select3. I remove Item2 : then I have Item_select1, Item_select2 instead of Item_select1, Item_select3. But I can see that the input fields (hidden) have correct value....It's "just" a display error, but I can't find how to correct it.

Thanks for your help !