All is Dust supposed to destroy Vanguard supports? [Fix in 4.4]

All is Dust’s text states that it destroys all non-devoid colored supports. However that does not mention that it destroys vanguard supports - normally vanguard supports are not targeted by support destruction unless specifically mentioned in the card’s text.

Is this intended behavior or a simple bug?

It should not destroy vanguards.

It seems like an expected behaviour for a card that don’t explicitely says that it can apply to vanguards.

If the “support” word includes several subtypes, the “vanguard support” has never been treated as a subtype but as a category of it’s own.

Thank you for the feedback!
This issue is now under investigation.