[confirmed]Autumn Willow ignore-shroud stops after copy

[Korath]

Describe the Bug:
If Autumn Willow becomes a copy of a different creature after its ignore-targeting ability is activated (whether before or after it resolves), it can't be targeted by that player anymore.

Which card behaved improperly?
Autumn Willow.

Which update are you using? (date, name)Which type? (duel, gauntlet, sealed deck)
dev master head, cde9295, but it's been like this for a long time, since at least the May 2013 Planeswalking to Modern release.

What exactly should be the correct behavior/interaction?
The targeted player can target this permanent as if it didn't have shroud; other changes to the permanent shouldn't matter.

Are any other cards possibly affected by this bug?
Nope.

The most straightforward way to test is with Cytoshape after allowing yourself to target Autumn Willow, since that'll let you choose another creature with shroud. Alternately, you can give it shroud again after making it a copy with something like Plaxmanta.

[Aswan jaguar]

Confirmed if the copy is a creature with shroud.