MTG Arena Bugs & Product Suggestions
This page is for reporting bugs and submitting product suggestions. If you are experiencing issues with your account, with an order, or otherwise need customer support, please click here.
How to report a bug
1. Give us the steps to reproduce the bug
2. Note which platform you’re using (PC, Steam, Mac, Android, or iOS)
3. Enter the actual results you’re experiencing
4. Enter the expected results of the feature
5. Add any relevant screenshots/videos
6. If you found a workaround, please add workaround steps.
Examples of bugs: Incorrect rules interactions, wrong event rewards, issues with client functions like creating decks
How to submit product suggestions
- Select “Product Suggestion” as the Category for your suggestion
- Enter your feedback
- Add any relevant screenshots/videos
Examples of product suggestions: Feedback on visual effects, recommendations for user interface improvements, new feature requests
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206 results found
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Unable to use full sideboard when using companion
Started happening with release of Final Fantasy (I believe)
Notes:
Platform: PC
This bug only appears to be happening when creating new decks.
If I choose a deck with a companion that was already in "My Decks" before the update this bug does not happen.Steps:
1. Create a new traditional deck where companions are legal e.g. Timeless
2. Select a Companion (so far tested with both Lurrus and Yorion)
3. Create a full sideboard (full 15 cards)
4. When sideboarding:
Expected outcome: I see the full 15 cards and can use them
Outcome: I can only use the…6 votes -
BO1 format decks with 15 sideboard cards treated as invalid decks.
- After the update on 7/9/2025, some BO1 format decks with 15 sideboard cards display the message "Invalid Cards: 0"
- These decks can no longer be selected as decks to use in BO1 format
- Before this update, BO3 decks could also be used in BO1.
- From now on, if you want to use the same deck in both BO3 and BO1, you will have to clone it and reduce sideboard cards in BO1 deck, which is a pain.
- Roll back this change immediately.
- If this is not okay, why does the sideboard display have a separator that says "Best of Three…
8 votes -
Cant use full sideboard
During sideboarding, I can only see and use the first 7 cards in my sideboard despite having 15. The deck is saved as traditional timeless. Remaking the deck from scratch might fix the issue, but copying does not.
1 vote -
Deck construction only allowing 7 cards in sideboard
Issue seems to be related to the "Best of Three only" being used as a reference for a 15 card sideboard. Any card under this message turns the number of cards from white to red, so 7 cards are ok and 8 cards are not.
7 votes -
The 15 card sideboard warning prevent editing or building sideboard. Great dissatisfier and devalues this product.
I suggest the sideboard problem be fixed. Screen says I have more than 15 cards. This is not true. It does not allow me to edit my sideboards. Already restarted my computer and repaired game files.
3 votes -
Sideboard not showing
I am playing Pioneer, and every time after a game is finished, I only get access to 7 of my 15 cards (Companion plus six cards) as if I'm playing Best of one instead of Best of three. I've tried duplicating the deck, reinstalling the game, and changing the deck from Traditional Pioneer to Pioneer and back, as well as attempting to see if I had the issue on Mobile, but I still did.
EDIT: The issue was the 16-card Sideboard. However, this is an issue that should still be addressed.
7 votes -
Sideboard Bug Bo3/ Problema con el sideboard Bo3
El sideboard jugando explorer bo3 da problemas, a veces haces click en las cartas y no te deja cambiarlas, si tienes por ejemplo kaheera y metes otra criatura que no es compatible se queda pillada la aplicación, incluso reseteando el cliente (en vez de quitar a kaheera automáticamente como sería lo lógico o preguntarte si la quieres quitar de compañero)
A veces salen imágenes blancas por el menú después de estos bugs.
Ojalá lo pudieran arreglar ya que el bo3 es un elemento clave del juego.The sideboard when playing explorer bo3 gives problems, sometimes you click on the cards…
2 votes -
Can’t save sideboard of more then 7 cards
Can’t save more the 7 cards in sideboard due to error that deck can’t have more then 15 cards in the sideboard.
Platform iPhone 16
Steps to reproduce:
1) build a deck
2) have more then 7 cards in the sideboard
3) try and saveActual result;
The above error is recieved —> deck can’t have more then 15 cards in the sideboardExpected result:
Be able to save the deck1 vote -
Sideboard Erro during Metagame Challenge
Played a Historic Bo3 ranked match with a deck and had no problems. Entered the Historic Metagame Challenge with the same deck and, both after game 2 and after game 3, once I made my changes and hit Submit, the Sideboard disappeared and I couldn't do anything until the SB timer ran out, at which point the next game started WITHOUT the SB changes
7 votes -
Can't sideboard in standard metagame challenge
I was 4-0 in the metagame challenge, and would easily won my last match, but I lost because there is a bug that don't allow me to sideboard. I was with a RW tokens needing to put my hasters to win a game against a mill deck, and I couldn't get out my sunfalls. really, I lost at least 4 hours playing this tournament to lose like that.
23 votes -
Lotus Field Sideboard - Bug
There is a bug with lotus field where if the opponent concedes while your choosing what to sacrifice, it doesn't allow you to sideboard at all. in game one the opponent conceded while i was choosing what to sacrifice causing me to not be able to sideboard for game 2.
2 votes -
Sideboard in pioneer showcase don't shows the entire pool of cards, only 7 cards
i joined the event with a legal deck with 15 cards in sideboard, but when i start after g1 the sideboard was uncomplete, i couldn't side, and so i lose the game, please check this bug, i lose my gems. please refound my gems, this wasn't my fault.
14 votes -
Sideboard incorrect in Pioneer Metagame Challenge
Submitted a deck that says Azorious bo3, that is a pioneer deck with a companion and 15 sideboard cards. I only see 6 sideboard cards.
3 votes -
Invalid Deck: Decks cannot have more than 15 cards in the sideboard. It says this when I have more than 7.
Invalid Deck: Decks cannot have more than 15 cards in the sideboard. It says this when I have more than 7.
25 votes -
Unable to add cards to sideboard
Unable to create a sideboard for my brawl deck with Karn, the Great Creator on mobile (Android). I get the notification on mobile that Karn allows me to access the board, but it doesn't give me any option to add cards to it or even access it.
2 votes -
In bo3 I can see only the first 7cards of sideboard
I'm playing BO3 pioneer and I can see only the first 7cards of sideboard
4 votes -
Game in linbo after disconnect in sideboard Bo3
When a player disconnects in the sideboard after a game in Bo3, both players will get a "Waiting for Opponent..." for many minutes after game should have been terminated. Incredibly bad user experience. I should not be affected by my opponent leaving the game after losing round 1.
3 votes -
When The games *****, i can’t use sideboard
Whenever the game drops, and they have dropped A LOT, when the game restart, some meaningless writing appears and I can't use my sideboard in the next game. This has been happening for over a year now and you guys never solve it.
1 vote -
Only 7 sideboard cards show in Best of 3
When I'm playing Best-of-3, I only have the option to sideboard with the first 7 cards.
The deck is listed as a Traditional Pioneer deck instead of BO1, so TBH I don't even know why y'all have the 7-card sideboard option enabled in the first place. This is incredibly inconvenient for ranked matches and actively hinders testing.
1 vote -
Bug about sideboard
サイドボードの順番が操作していないにも関わらず初期化されるバグが発生します。
頻度や条件は不明ですがパイオニアBO1（ランクではなくフリーで遭遇しています）で複数回確認しています。BO3では大きな影響はないと思われますが、サイドボードが設定した上の7枚しか使えないBO1において《願いのフェイ》で勝つためのカードを取得しようとした際に、見られる7枚の中に欲しいカードが表示されないために負けるという状況が起こっています。
以下は自動翻訳のため間違いが含まれるかもしれません。
A bug occurs where the order of the sideboard is reset to its default, even though I have not changed it manually.
The frequency and conditions are unknown, but I have encountered it multiple times in Pioneer BO1 (in casual matches, not ranked).While this may not have a significant impact in BO3, in BO1—where only the top 7 cards of the sideboard can be accessed—this can cause a loss. Specifically, when attempting to fetch a win-condition card with Fae of Wishes, the desired card may not appear among the visible 7 cards due to the…
1 vote
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