Giada only buffs angels that enter after her. If an angel enters at the same time with her, she will not give out a +1/+1 counter, as stated here (note that this is a ruling for Metallic Mimic, but it's the same wording):
Creatures of the chosen type that enter the battlefield at the same time as Metallic Mimic won’t enter with an additional +1/+1 counter. (2017-02-09)
What is the actual behaviour of the card?
Giada buffs angels that enter play at the same time with her
What is the expected behaviour of the card?
What is the actual behaviour of the card?
Support Forum Thread
Forum Post: https://forums.mtgo.com/index.php?threads/giada-font-of-hope-buffs-angels-that-enter-at-the-same-time-with-her.873/
Screenshot
https://user-images.githubusercontent.com/52964431/232242341-85cb4c6b-cc28-4fe3-a6e9-bf51cbfe3d8b.mp4
Please provide a list of affected cards Affects: [Giada, Font of Hope]
Card Images