Last character in TextView doesn't delete when the delete key is used.

[joemichels]

Have you read the Contributing Guidelines?
Yes

General Information

The issue I see seems very strange to me, in that deleting the last character with the delete key is a fundamental function. Yet, it doesn't work in the situation I'm using it.

What I'm looking for is confirmation that what I'm seeing is a fundamental bug, or just something that is happening in the complex CoreData, @ObservedObject, and SwiftUI architecture.

• Project version:

• Platform/OS version:
  iOS 15.x. MacOS Cayalist

• IDE version:
  Xcode 13.2.1

• Devices:
  iOS and iOS simulator

• Any related GitHub issues:

Describe the bug

After trying a few characters into a TextView and then deleting them using the delete key, all the characters will delete except the last. What happens to the last, is the cursor will move to the 0 position, but the last character remains.

Also, related is if you have one or more characters and you select them and either hit the delete key, or use the Cut menu item, the text remains as described above.

Steps to reproduce

See above.

Expected behavior

The last character to delete.

Stack trace, compiler error, code snippets

None

Screenshots

None

Additional context

My text is coming from a CoreData text string, from an @ObservedObject var dataElement: [CoreDataObjectWithText]

Usage:
TextView(Binding(self.$dataElement.text, replacingNilWith: ""))
.isEditable(true)

Below is the custom Binding extension.

public extension Binding where Value: Equatable {
/// Creates a non-nil binding by projecting to its unwrapped value, translating nil values
/// to or from the given nil value. If the source contains nil, this binding will return the
/// nil value. If this binding is set to the given nil value, it will assign nil to the underlying
/// source binding.
///
/// This is useful if you have optional values of a type that has a logical 'empty' value of
/// its own, for example String:
///
/// @State var name: String?
/// ...
/// TextField(text: Binding($name, replacingWithNil: ""))
///
/// If the name property contains nil, the text field will see an empty string. If the text field
/// assigns an empty string, the name property will be set to nil.
@available(macOS 10.15, iOS 13, tvOS 13, watchOS 6, *)
init(_ source: Binding<Value?>, replacingNilWith nilValue: Value) {
self.init(
get: { source.wrappedValue ?? nilValue },
set: { newValue in
if newValue == nilValue {
source.wrappedValue = nil
}
else {
source.wrappedValue = newValue
}
})
}