ui.toggle_value(...).changed() always returns false

[tonogram]

Describe the bug
Calling Response::changed() on a Ui::toggle_value(...) always returns false regardless of whether or not the value has been changed.

To Reproduce

if ui.checkbox(&mut self.a, "Checkbox").changed() {
    println!("Checkbox changed!"); // Works as expected
}

if ui.toggle_value(&mut self.b, "Toggle value").changed() {
    println!("Toggle value changed!"); // Never executed
}

Expected behavior
ui.toggle_value(...).changed() should have the same behavior as ui.checkbox(...).changed().