Certain Controls tied to Single Line of Text Columns do not update if the list is edited in Quick Edit mode.  Here is a known list of controls that exhibit the behavior:

Choice
List Lookup
People
SQL Request

Do not use quick edit mode to alter columns containing these controls if they are associated with Single Line of Text columns.  In the case of lookup, people, and choice controls utilize the associated column type rather than the Single Line of Text Column

This issue occurs because of how the data for these controls is stored when they are associated to single line of text columns.  The values for these controls are not pulled from the column value.  Instead they are stored in the XML property of the item.  This property is not updated when Single Line of Text Columns are updated.  If Quick Edit is used a mismatch in the data is created because of this.  This is not the case when the associated column types are used however.