Update Selected/Update All does not work if formatter named Checklist is present in default form view.
Steps to Reproduce
Open any one of the sc_task records and make sure that the Checklist formatter is not on the form.
Go to the list view of sc_task records and select multiple records to be updated.
Right-click on the column name and select Update Selected from the context menu.
Try selecting a value for the reference fields like Assignment group.
Note that the lookup icon to select works correctly.
Open one of the sc_task records. Right-click in the former header and choose Configure > Form Layout.
Add the Checklist formatter to the form.
Repeat the previous process and try updating multiple records.
Note that none of the reference lookups work and an error appears in the logs. You are not able to select a value for the reference field to update the records.
Remove the Checklist formatter from the form. If the checklist is necessary on the form, considering creating a separate list view and form that users can use to perform the Update Selected/Update All functions.
Related Problem: PRB1153520