Collectible Card Game Headquarters

Describe the bug:
You never get a choice to goad when Grenzo, Havoc Raiser's trigger resolves.

Which card behaved improperly?
Grenzo, Havoc Raiser.

Which update are you using? (date, name)Which type? (duel, gauntlet, sealed deck)
Dev 4745ef3.

What exactly should be the correct behavior/interaction?
Either goad a creature or exile-and-eventually-cast the top card of the damaged player's library, not automatically the latter.

Are any other cards possibly affected by this bug?
There's a comment in Grenzo's function saying goad is meaningless in two-player. That's both incorrect (see ruling: ...It the creature can't attack any of those players but could otherwise attack, it must attack an opposing planeswalker (controlled by any opponent) or the player that goaded it.) and makes me afraid to even check if it's implemented on any of the cards with it.

You never get a prompt to choose either ability nor is chosen any automatically in dev 778ccb5 but it doesn't show a sign that it triggers in the first place.

Fixed that it doesn't trigger in commit 51914984.
Still remaining it triggers more times than damage dealt and effect cards last for ever not till eot. fixed in commit a54f08a ("Grenzo, Havoc Raiser add "until end of turn"", 2020-12-08)

Dev 778ccb5 doesn't indicate that it triggers by displaying a dialog for you to select an ability or by automatically selecting one.