Assigning unique to moved field results in a moved field

[The-Ray-Man]

The current version gives this result:
The final consume should be accepted.

class A(
    @Unique var um: B
)

class B()

fun consume(@Unique a: A) {}

fun test(@Unique a: A) {
    @Unique val x = a.um
    a.um = x
    consume(<!UNIQUENESS_VIOLATION!>a<!>)
}