I’m building a custom input field using UITextField. When the user taps to focus the field and the text is long, the entire text becomes selected by default. This is the same behavior you can see in iOS Safari’s search field or the Messages app search field. What I want: when the field becomes first responder, the caret should be placed at the end of the text (latest word), without selecting all the text. Here’s the code that builds my text field: public func makeTextField() -> UITextField { let textField = UITextField() textField.autocorrectionType = .no textField.setContentCompressionResistancePriority(.required, for: .horizontal) textField.setContentCompressionResistancePriority(.required, for: .vertical) if #available(iOS 13.0, *) { textField.smartInsertDeleteType = .no } textField.smartQuotesType = .no textField.smartDashesType = .no textField.autocapitalizationType = .none textField.contentMode = .scaleToFill if let font = attributes[.font] as? UIFont { textField.font = font } if let color = attributes[.foregroundColor] as? UIColor { textField.textColor = color } // Truncate long text at the head let paragraphStyle = NSMutableParagraphStyle() paragraphStyle.lineBreakMode = .byTruncatingHead textField.defaultTextAttributes[.paragraphStyle] = paragraphStyle textField.delegate = self textField.backgroundColor = .clear textField.addTarget(self, action: #selector(textFieldDidChange(_:)), for: .editingChanged) return textField } Entire text is selected when focusing the field if the text is long. What I’ve tried Forcing the caret to the end in textFieldDidBeginEditing: func textFieldDidBeginEditing(_ textField: UITextField) { let end = textField.endOfDocument textField.selectedTextRange = textField.textRange(from: end, to: end) } Doing the same asynchronously (next runloop) to avoid the system overriding selection: func textFieldDidBeginEditing(_ textField: UITextField) { DispatchQueue.main.async { let end = textField.endOfDocument textField.selectedTextRange = textField.textRange(from: end, to: end) } } Despite these, the system still selects all text on focus when the string is long/truncated at the head.

My Xcode editor turns into plain white text, and I cannot edit directly on Xcode. All the Swift files are affected, but not other files like Podfile... I did try to resolve my move Xcode to trash and install a new version of Xcode, but I still cannot use it.