Setters with non-void return type fail at runtime when statically compiled

import groovy.transform.CompileStatic

@CompileStatic
class A {
  int prop
  private int field

  A setProp(int prop) {
    this.prop = prop
    this
  }

  A setField(int field) {
    this.field = field
    this
  }

  static void main(String[] args) {
    A a = new A()
    a.setField(1) // ok
    a.setProp(1) //throws NoSuchMethodError at runtime
  }
}

A a = new A()
a.setField(1) //ok
a.setProp(1) //throws NoSuchMethodError