How does morning light work? is it bugged?

If Ihave a Solari Priestess in play and cast Morning Light with Daybreak. The priestess' Daybreak doesn't trigger.

I'd had it not trigger other daybreak  effects either. Am I missing something?

Morning light itself has Daybreak. You sure it was the first card you played in the turn?

Yes. I created a deck to test it vs A.I.  It worked there, but it was hit and miss during expeditions.

But the game updated so many times that it may have been fixed.

I've seen this exact scenario work several times - they have you pick the Celestial card before the spell resolves, so it can appear that the two events are not connected.