When a player is disconnected during gameplay, and often leads to being dropped from their event.

When lag causes a misclick or skipped action. The user isn't disconnected from the client though.

When the User Experience or User Interface is involved in an issue. Generally not a technical bug, but where the client could be improved to help reduce confusion.

Confounding conundrum recognizes the first land entering the battlefield as a result of field of ruin as if it was the second land, forcing you to return 1 land to your hand.

I was playing and Magic Online suddenly crashed and I pressed the buttons in an attempt to get back. It turns out that the game recorded what I pressed and still crashed. When I came back to the game, after reopening Magic Online, he understood that I "pressed" the buttons even with him frozen and that cost me the game.

Unable to split damage when casting Shatterskull smashing on an Elspeth Sun's Champion and Nighthawk Scavenger regardless of amount of damage divided.

confounding conundrum is bugged, i had to return two lands to my hand, instead of one.

Ingame crash for both players, MTGA start unpossible for both... (iminnent crash)

Raka Santuary does not recognize when you control a blue permanent and a white permanent.

I cast a manamorphose for double red, cast the second pay it with the 2 manas of the first manamorphose and automatically add other 2 red mana without the possibility to choose the color (I would add red and black)

Mana freezes in the middle of my screen an my creatures freeze on the side so I can't tell if I can use them or not it's also the same for my opponents creatures as, I'm unsure what category this goes in for issues though

sometimes in the last day, my turn has been automatically skipped but i didnt hit any buttons and had all auto yields turned off

I cast the new spell shatterskull pass and it automatically set X = 1.

Sheltering Ancient was played on my opps side; I had a creature in play. The first cumulative update put a counter on my creature, but all subsequent turns saw the effect not take place.

Did not place counters on eligible creatures on my side of the battlefield after the first cumulative upkeep trigger was performed.

In my previous league I drafted the card Lithoform Engine, but it didn't work. I could cast the card, but couldn't activate any modes of the artifact.

client crash every time i finish sideboarding after new update.
i re-installed it several times but the problem didn't go away.