I was going to win game3, no doubt, and the game suddenly crashed. I wasn't able to rejoin in time, and lost th egame. There is no reason for the game to crash like that, since I'm always playing and that never happend.

draft begins and draft window close reload magic online but lose several first picks

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

Play Lobby Disconnection/Dropped

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

1.Activate mindslaver targeting opponent
2. During that players turn, cast their lightning helix while holding the control key
3. Actual: priority immediately passes to non active player, no opportunity to have active player(opponent being controlled) respond to their own spells
4. Expected: Active player would maintain priority, would be able to make them respond with their own daze targeting their own helix

While drafting, lag causes a user to miss a pick or timeout from the draft.

For when there is client confusion or an issue that can not be reproduced or attributed elsewhere.

When a player is unable to submit their sideboard due, often giving an error message, and often for having having 14 or 16 cards in their constructed sideboard, or other various issues during sideboarding that aren't transitioning issues or the client crashing/becoming unresponsive.

When there is either an error message, or the client is unresponsive, and you must force close the client.

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.

https://i.imgur.com/W2NJKqU.jpg

For when an issue occurs when going to or from sideboarding back to the duel scene.

If I take more than five seconds to do an action in my main phase it will skip to the end of the turn.

When my opponent cast distant memories on me it gave me no option whether to put the card in their hand forcing me to concede to end the game without fully conceding the match.

When furious rise exiles another card you should not be able to play cards previously exiled with furious rise
In a sealed game today I was able to cast cards from Furious Rise when I believe I should not have been able to due to another card having being exiled after it.
In this specific case, Swift Response was exiled, the following turn Colossal Dreadmaw was exiled, I was still able to play Swift Response during my opponents combat step.

Steps Performed:
- Client restart
- Clean uninstall reinstall

First clean uninstall/reinstall resolved issue. Error message appeared again on second launch of client

Error message received:
Error reading XML card data. This usually means that you have a corrupted install folder or registry. Please uninstall MTGO from the add/remove programs menu, and then reinstall the application from the MTGO website.