Billboard as a link

Hello,
 
We would like to use billboards in our project because they are more scalable than custom images, but we would also like to be able to use them as links. As of now this a!save works:
 
 
a!imageField(
  images : a!documentImage(
    document: 1,
    link: a!dynamicLink(
      saveInto: a!save(ri!var, 1)
    )
  )
)
 
 
but this one doesn't (it's not even clickable)
 
 
a!billboardLayout(
  backgroundMedia: a!documentImage(
    document: 1,
    link: a!dynamicLink(
      saveInto: a!save(ri!var, 1)
    )
  )
)
 
 
Basically, image link inside a billboard doesn't work. Is this intended or is this a bug? Is there some other way to make billboards linkable?

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