Omnath, Locus of All's reveal ability hardlocks the player if a split card is revealed (or Mycosynth Lattice)

[Wizzerinus]

What is the expected behaviour of the card?

• If you reveal a split card with three or more colored symbols like Cut//Ribbons, Hit//Run, you can add three mana of that card's colors.

What is the actual behaviour of the card?

• If you reveal a split card like that, you cannot choose any colors of mana. You then lose the game because your timer runs out.
• This also happens if someone has Mycosynth Lattice in play, you should be able to reveal the card and then add 0 mana because you cannot choose any color, not lose the game.

Support Forum Thread

Forum Post: https://forums.mtgo.com/index.php?threads/omnath-locus-of-all-softlocks-you-if-you-reveal-a-split-card-or-if-mycosynth-lattice-is-in-play.1462/

Screenshot
Cut // Ribbons:

Hit // Run (singleplayer test):

Mycosynth Lattice (singleplayer test):

Please provide a list of affected cards
Affects: [Omnath, Locus of All]

Card Images