Olivia, Mobilized for War gives the creature haste and makes it a vampire even if you don't discard a card

[Wizzerinus]

What is the expected behaviour of the card?

• Whenever another creature enters the battlefield under your control, you may discard a card. If you do, put a +1/+1 counter on that creature, it gains haste until end of turn, and it becomes a Vampire in addition to its other types.

What is the actual behaviour of the card?

• Whenever another creature enters the battlefield under your control, you may discard a card. If you do, put a +1/+1 counter on that creature. Regardless of whether you discarded a card, the creature gains haste until end of turn, and it becomes a Vampire in addition to its other types.

Support Forum Thread

Forum Post: https://forums.mtgo.com/index.php?threads/olivia-mobilized-for-war-always-gives-the-creature-haste.1663/

Screenshot

Please provide a list of affected cards Affects: [Olivia, Mobilized for War]

Card Images

[vorpal-buildbot]

Daybreak has labelled this bug as Fixed