Several times in a row now, I get two of the same thing when receiving a reward. The first time I can pinpoint the exact time it happened was during season rewards. I was gold ranked in both limited and constructed and received two of the exact same card style. I thought this was weird but figured it was just bad luck. Today, I hit level 82 on the mastery pass and got two Yaroks. Now that I'm thinking about it, I've had probably a half-dozen of these statistically-unlikely happenings (often with mythics?) in the past few weeks. This may or may not be related to the following bug reports that I found while searching for something similar to my own:

https://feedback.wizards.com/forums/918667-mtg-arena-bugs/suggestions/38116960-problems-with-invidual-card-rewards

https://feedback.wizards.com/forums/918667-mtg-arena-bugs/suggestions/38111803-battle-pass-shows-duplicates

https://feedback.wizards.com/forums/918667-mtg-arena-bugs/suggestions/38210539-two-identical-mytchic-rares-in-wild-card-i-only

I updated MTG Arena on September 4th, and after doing so, attempted to use the client. The client then presented the following error message:
"Error Updating Data: Check your connection and try again."

It also pulled up what I believe to some form of command line that I have not interacted with whatsoever, displaying the following text:

Exception: SSL certificate error, there are policy errors: RemoteCertificateNameMismatch, RemoteCertficateChainErrors
EndpointHashPath = https://assets.mtgarena.wizards.com/External_1678_727490.mtga
Waiting for endpoint response...
Error with Doorbell - Error: TrustFailure (One or more errors occurred.)
Current endpoint hash is ed309cdb99a98cda05d829a7b0ec0bc0
Found existing manifest with hash ed309cdb99a98cda05d829a7b0ec0bc0
Applying Global Quality Level 0 - Low

I was in the middle of a game of Ranked Draft for Core Set 2020 and became unable to pass priority or use abilities which resulted in me dieing in a game I could have won. The only thing I was able to do was click the no responses button at the bottom right of the screen (auto-pass), which obviously was not good enough to get me through a difficult part of the game. I will require a refund for this, as it cost me a draft game that I paid for with crystals (which I paid real money for). Please refund my 750 gems for this, and thank you for your time.

Sparky keeps saying "Hmmm." without taking any other action and the game does not progress due to it. This has gone on for several minutes.

It is the end step of my turn, I have a Kasmina and a wizard token, Sparky only has 5 untapped Mountains. My guess is that Sparky is trying to cast Command the Storm on my wizard, but cannot do that due to Kasmina's static ability, which makes the spell cost 7 mana instead of 5.

Edit: After submitting, I conceded the game. This lead to a Command the Storm going on to the stack from Sparky's hand, during the animation of my avatar exploding. This further supports my guess.

I got disconnected from the server during a match, the game pretending that i have no connection to internet but i was able to surf online.
When I finally succeeded to reconnect the game, i was still in the match (there was sounds of cards playing and the time out countdown) but the game was stuck on the loading screen (screen 1). I finally lost after 2mn but even after hearing the defeat sound, the game is still stuck on loading screen printing a waiting time of 2mn + (lost the screen).
Please fix your game please, it's very frustrating for F2P players to spend all your gold in events and loose this.

EDIT : i see a lot of players reporting this bug (random disconnections and impossible reconnection) i hope players will get compensations for all theses non-game and gold wasted because MTGA is currently unplayable

problems [multiple]
1. huge lag while playing [rank] and searching library, lost many games because my time ran out while it was 'restacking my deck or some other useless animation, or just stays frozen all together and come back to being 'defeated'
2. while mulligan, im having to wait until their animation or mine ends b4 i am allowed to remuligan
3. even if they have not mulliganed.... i must watch all of my own restacking of my deck animation prior to being able to remulligan...

plz... ffs, take care of this issue b4 adding any extra fluff to the game!

https://www.youtube.com/watch?v=M3904cTZ5pY