Looking at the deliver1.PNG, there is a grid with a 'MultiColumnComboBox' component inside one of the columns. When a name is removed from a role in one row (deliver2.PNG), then that row is deleted/removed, the row below it moves up but loses its name on the UI but the data is not effected (deliver3.PNG).
Can confirm all data is intact when passing information to the 'MultiColumnComboBox' component, it's just a UI bug which doesn't display the value that was selected in the unedited/deleted row. Can also confirm this bug exists in other grids with 'MultiColumnComboBox' components.
The code path is as follows in images code1.PNG, code2.PNG, and code3.PNG. It can be seen there is a UserComboBoxCell element which returns a component called 'EditableGridMultiColumnComboBoxCell'. It is this component that uses the the 'MultiColumnComboBox' component.