Text Field stringValue saves twice in CoreData. Why?

Hello:

I have the following code: There are no build errors, But the first text field "groupName" saves immediately (even without pressing the enter key) when I move to the next field, before the rest of the fields are entered. Then saves again when I press the SAVE button. That does not happen with any of the other three fields.

Any help with identifying why that happesn will be appreciated.

import Cocoa
import CoreData

class GroupViewController: NSViewController {

    var items: [NSManagedObject] = []
   
    override func viewDidLoad() {
        super.viewDidLoad()
    }
  
    @IBOutlet weak var groupNameTextField: NSTextField!
   
    @IBOutlet weak var memberOneTextField: NSTextField!
   
    @IBOutlet weak var memberTwoTextField: NSTextField!
   
    @IBOutlet weak var memberThreeTextField: NSTextField!
   
   
    @IBAction func saveGroup(_ sender: Any) {
                print("SAVE ACTION STARTED")
              
                let appDelegate = NSApplication.shared.delegate as! AppDelegate
                let managedContext = appDelegate.persistentContainer.viewContext
                let registerStudentsObject = NSEntityDescription.insertNewObject(forEntityName: "PlayerGroups", into: managedContext)
                print("MOC READ")
                   
                registerStudentsObject.setValue(groupNameTextField.stringValue, forKey: "groupName")
                registerStudentsObject.setValue(memberOneTextField.stringValue, forKey: "name1")
                registerStudentsObject.setValue(memberTwoTextField.stringValue, forKey: "name2")
                registerStudentsObject.setValue(memberThreeTextField.stringValue, forKey: "name3")

                print("FIELDS READ")
                do
                {
                    try managedContext.save()
                    items.append (registerStudentsObject)
                    print("groupName, name1, name2, name3 saved")
                }
                catch
                {
               print (error)
        }
               
    }
}

Here is the output log:

SAVE ACTION STARTED

CoreData: annotation: Connecting to sqlite database file at "/Users/wlionelwilliams/Library/Containers/AppDev.ScorcentMasterReview/Data/Library/Application Support/ScorcentMasterReview/ScorcentMasterReview.sqlite"

CoreData: sql: SELECT TBL_NAME FROM SQLITE_MASTER WHERE TBL_NAME = 'Z_METADATA'

CoreData: sql: pragma recursive_triggers=1

CoreData: sql: pragma journal_mode=wal

CoreData: sql: SELECT Z_VERSION, Z_UUID, Z_PLIST FROM Z_METADATA

CoreData: sql: SELECT TBL_NAME FROM SQLITE_MASTER WHERE TBL_NAME = 'Z_METADATA'

CoreData: sql: SELECT TBL_NAME FROM SQLITE_MASTER WHERE TBL_NAME = 'Z_MODELCACHE'

CoreData: sql: SELECT TBL_NAME FROM SQLITE_MASTER WHERE TBL_NAME = 'ACHANGE'

CoreData: sql: SELECT TBL_NAME FROM SQLITE_MASTER WHERE TBL_NAME = 'ATRANSACTIONSTRING'

MOC READ

FIELDS READ

CoreData: sql: BEGIN EXCLUSIVE

CoreData: sql: SELECT Z_MAX FROM Z_PRIMARYKEY WHERE Z_ENT = ?

CoreData: annotation: getting max pk for entityID = 4

CoreData: sql: UPDATE OR FAIL Z_PRIMARYKEY SET Z_MAX = ? WHERE Z_ENT = ? AND Z_MAX = ?

CoreData: annotation: updating max pk for entityID = 4 with old = 26 and new = 27

CoreData: sql: pragma auto_vacuum

CoreData: annotation: sql execution time: 0.0000s

CoreData: sql: pragma auto_vacuum=2

CoreData: annotation: sql execution time: 0.0000s

CoreData: sql: COMMIT

CoreData: sql: BEGIN EXCLUSIVE

CoreData: sql: INSERT INTO ZPLAYERGROUPS(Z_PK, Z_ENT, Z_OPT, ZGROUPNAME, ZNAME1, ZNAME2, ZNAME3) VALUES(?, ?, ?, ?, ?, ?, ?)

CoreData: details: SQLite bind[0] = (int64)27

CoreData: details: SQLite bind[1] = (int64)4

CoreData: details: SQLite bind[2] = (int64)1

CoreData: details: SQLite bind[3] = "SCORCENT"

CoreData: details: SQLite bind[4] = ""

CoreData: details: SQLite bind[5] = ""

CoreData: details: SQLite bind[6] = ""

CoreData: sql: COMMIT

CoreData: sql: pragma page_count

CoreData: annotation: sql execution time: 0.0000s

CoreData: sql: pragma freelist_count

CoreData: annotation: sql execution time: 0.0000s

groupName, name1, name2, name3 saved

SAVE ACTION STARTED

MOC READ

FIELDS READ

CoreData: sql: BEGIN EXCLUSIVE

CoreData: annotation: getting max pk for entityID = 4

CoreData: annotation: updating max pk for entityID = 4 with old = 27 and new = 28

CoreData: sql: COMMIT

CoreData: sql: BEGIN EXCLUSIVE

CoreData: sql: INSERT INTO ZPLAYERGROUPS(Z_PK, Z_ENT, Z_OPT, ZGROUPNAME, ZNAME1, ZNAME2, ZNAME3) VALUES(?, ?, ?, ?, ?, ?, ?)

CoreData: details: SQLite bind[0] = (int64)28

CoreData: details: SQLite bind[1] = (int64)4

CoreData: details: SQLite bind[2] = (int64)1

CoreData: details: SQLite bind[3] = "SCORCENT"

CoreData: details: SQLite bind[4] = "John Doe"

CoreData: details: SQLite bind[5] = "Jane Doe"

CoreData: details: SQLite bind[6] = "Peter Pan"

CoreData: sql: COMMIT

groupName, name1, name2, name3 saved