Urza's Avenger bug

[catman123456]

[[Urza's Avenger]] is not putting -1/-1 counters on it self

[github-actions]

Urza's Avenger - (Gatherer) (Scryfall) (EDHREC)

{6}
Artifact Creature — Shapeshifter
4/4
{0}: Urza's Avenger gets -1/-1 and gains your choice of banding, flying, first strike, or trample until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)