Something quite like a big bug in momir

[rex4]

I recreated the issue with dev mode: https://i.imgur.com/XEULvqN.jpg

So, the problem is, I used X=9 many times until right away it asked me to choose a color without first telling me what creature has been chosen, or at the very least what my choice would do. As you can see, nowhere on the screen does the game give me a clue. Here it's obvious though: it's Iona, Shield of Emeria, no other CMC=9 card ask such choice when entering the battlefield, but the problem is: many CMC=2 ask the same question, so for example you have no idea if your choice is the effect of Painter's Servant or Quirion Elves when you X=2 and have that same choice to do.

[rex4]

In fact it's officially an issue: the same happens in MTGA but admin says it's a known issue here https://forums.mtgarena.com/forums/threads/62102 and I'm pretty sure there isn't this problem in MTGO.