Parapoly type specialization fails on bit_field types

[DragosPopse]

minimal repo:

package main

Field :: bit_field u16 {
	a: int | 16,
}
Distinct_Field :: distinct Field

foo :: proc(f: $T/Field) {
	
}

main :: proc() {
	b: Field
	b.a = 23
	foo(b)
}

passing either Field or Distinct_Field will fail. Removing the /Field will make it work again.

The commit that created this behavior was 3f7a369