Binding in Interfacebuilder clears the prompt text

As soon as I set up a binding for an NSTextField in Interfacebuilder, it clears the placeholder string (The gray text, which disappears as soon as you enter text).

I currently don't understand, why binding the value should change the placeholder string too.

A开发者_如何转开发ny ideas?

I just figured it out myself:

As soon as I bind the value to some object I have to use the binding options to re-enable the placeholder string.

In the bindings tab I can now set the value Null placeholder which then has the same effect.

I find this a bit confusing but it seems to work.