Collectible Card Game Headquarters

Describe the bug:
If I activate Mishra's Factory, I get an orange activation card on the stack for no cost that does nothing when it resolves. Not even an activate-which-ability dialog.

(Looking at the code - and I use that term advisedly - it looks like it'll prompt if you activate it while being charged mana.)

Which card behaved improperly?
Mishra's Factory.

Which update are you using? (date, name)Which type? (duel, gauntlet, sealed deck)
Dev 950d8c4.

What exactly should be the correct behavior/interaction?
What it did in 1996: if currently charging mana, then just tap for without an activation card or prompt. If not currently charging mana, prompt for which ability to activate.

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

Mishra's Factory works fine in public version so bugged only in dev.

Looks to have been broken in commit d7bdc6c9.

Korath wrote:(Looking at the code - and I use that term advisedly - it looks like it'll prompt if you activate it while being charged mana.)

Correctly, if you select a card to cast and then click it or use autotap it will prompt you and give you also the choice to animate although you try to pay mana for spell.

Also if you activate it to become Assembly Worker it will tap.

Fixed all in commit 37cf5a72.