When playing the 3 MOCS events today, I encountered this bug two times:
When playing two matches at the same time, I used "Yield Until here" in one game, and skipped until that point in another game. However, the first time it happened, I won the affected (Standard) match.
Later, the same thing happened again when I misclicked on the "Yield Until Next End Step" option in the Standard Showcase Qualifier, MTGO skipped my first turn in the Modern Showcase, and caused me to lose the Modern game&match.

Unscythe, Killer of Kings' death trigger is bugged. Steps are:

1. Opponent plays Unscythe, Killer of Kings without mana to equip.
2. I kill one of their creatures on my turn.
3. Actual: Unscythe, Killer of Kings death trigger happens; after exiling their creature from the graveyard, a 2/2 black Swamp creature token is created. 4a. Expected: Nothing to trigger from killing the opponent's creature. 4b. Expected: Unscythe, Killer of Kings triggers, "Whenever a creature dealt damage by equipped creature this turn dies, you may exile that card. If you do, create a 2/2 black Zombie creature token.

Casting Liquid Fire didn't let me choose a number for its additional cast and defaulted it to 0

Synthetic Destiny cast with multiple creatures on the field (Talrand and 3 talrand tokens), and I only got 1 creature from my deck.

Am I able to get reimbursement for my draft league for the bug described above with Double Vision? You can drop me from the league if that works.

"I played double vision, then the next turn I cast read the tides targeting 2 of his creatures and the second copy wouldn't let me retarget to his other creature giving him lethal. The second copy never let me switch from the original 2 targets."

Chancellor of the Annex triggered only for the first opponent in a 4 player game of commander, and did not apply the mana tithe effect to the other two opponents

If a Gold token becomes tapped, you cannot sacrifice it for mana.

Steps to Reproduce
1. Resolve Chapter 4 of The First Iroan Games to create a Gold token
2. Opponent freezes it, most often with Kiora Bests the Sea God (leaving it tapped on your turn)
3. On your turn, attempt to sacrifice the Gold.

Expected: Choose a mana of any color
Actual: Left-click on Gold has no effect, right-click on Gold doesn't show mana-producing options

Also tested with Gild and its token with different art

I cast erratic mutation on my opponents blitz leech. It died, but mtgo did not reveal any cards or let me see what was put on the bottom.

PLayers report that if they join an event with one version of a deck, drop from it, make changes to that deck, then re-join the event, the game incorrectly uses the older version of the deck.

We don't yet have confirmation whether players are stopping to check changes are reflected in the Play Lobby before re-joining. We also don't know if players are only changing the sideboard, or changing both side and main, or just main. Usually players report not changing the name of their deck prior to re-joining.

Game ID 722264078

Steps:
1. I control an Etrata, the Silencer enchanted with Vanishing which reads:

Vanishing {U}
Enchantment — Aura
Enchant creature
{U}{U}: Enchanted creature phases out.

1. I attack with Etrata and in the damage step I activate Vanishing with Etrata's trigger on the stack.

Expected result:

Etrata, the Silencer the attached Vanishing phase out

Actual result:

Etrata, the Silencer goes to the command zone, Vanishing phases out (and never phases in again)

Squandered Resources doesnt work for City of BRass and Undiscovered paradise

When Ephemerate comes back from rebound but I have no target, the card's window stays open and there isn't any way to close it. It's very annoying and makes me lose a lot of time, and timer is pretty an important factor in Magic Online.

Sages of the Anima reads that noncreature cards in the top three go to the bottom of my library, but MTGO only gives me the option to keep them on top, so every draw step I eventually am just seeing the same three cards (and not drawing them!)

If you active urza's bauble on yourself everyone can see the card in the chat not only you.

This is very relevant when you play against a leovold or a white leyline when you cannot target your opponent and, in this way, you end to show, every time, a card from your hand to your opponent

I tried to cast Ballista for x=2 with 3 mana with Trinisphere and 2 Foundry inspectors out, and it was cast for x=1.

Couldn't stack my creature's triggers for tabernacle in the order I wanted.

When you imprint a second card onto Panoptic Mirror, you become unable to cast anything imprinted onto it.
1. Imprint a spell using Panoptic Mirror's X ability.
2. Imprint a second spell using it's X ability.
3. On your upkeep when the trigger resolves choose either of the imprinted card.
4. ACTUAL: The chosen spell is not copied and not cast, your upkeep ends.
5. EXPECTED: The chosen spell should be copied and the player should be given the choice to cast it.