Game crashed when opponent concedes while Lotus Cobra effect is on the stack. It has happened twice today.
When the Lotus Cobra effect is on stack, if the opponent concedes the game just stays waiting for what to do. I can more around my cards, see setting move the stack away and in from the screen but nothing else happens. I have to close the game and log back in.

Same incident. Is it not easier to make it not possible to concede during animations, and triggers?

so whats the solution here?.....4 times today...omnath...happens constantly

This keeps happening with me if they concede while there's a lotus cobra trigger.

The game state was my turn, I was playing a Cleansing Wildfire with two Lotus Cobras, a Brushfire Elemental, and a Kazandu Mammoth in play. Mid resolving the cobra triggers my opponent conceded and I was left in a state where the game wasn't ending, I didn't have the option to escape and concede the match myself if I wanted to go back to the main menu and the triggers were still showing on the stack. Attached screenshot of game state.

Had this come up twice today when picking a color of mana for Lotus Cobra.

This has been happening to me, lotus cobra landfall on the stack, opponent concedes. Game freezes. This happens like...1/4 games since Zendikar Rising release.

When my opponent was moving to their combat phase, I clicked on my Nyx Lotus to tap it for mana (to cast blue spells with Gadwick on the battlefield, to tap down my opponent's attackers), and my opponent conceded while I was clicking on the Nyx Lotus. I heard the normal explosion-sound when my opponent concedes, but the "Victory" overlay did not appear. The settings/gear icon is gone, and I can float over and click on things, but I can't exit or progress from the match. I had to shut down the game from the Task Manager.

I will attach a video showing the "stuck" game state.

Hello,

For this issue, please submit at: https://mtgarena-support.wizards.com/hc/en-us/requests/new and select 'Report a Problem in your Event'.

Thanks!

Opponent started casting Shatter the Sky, then conceded. I was left in the game and could not exit.

Experienced this as well though not in ranked. Opponent conceded while a Shrine was prompting me to pick a mana colour. The game locked up, no ability to proceed, concede, or exit. Had to kill it with Task Manager.

Just had it happen when opponent conceded while waiting for them to resolve a card effect of mine.

Yup, same here. I have only just started grinding so sucks to lose the points.

Same issue, first time I've encountered it.

Same issue, when opponent concede while i was activating plainswalker ability.

I've been experiencing the same problem playing a gauntlets of light combo deck. Any time my opponent concedes while I'm doing the infinite mana combo the game goes to this locked state.

Same issue here with Elspeth Conquers Death

Game locked and did not end when opponent conceded in Historic FNM event with my Wilderness Reclamation land untap on the stack.

Same here, 5/31/2020

Another game where I got stuck after opponent conceded. This time I was tapping a Triome for mana and the same thing happened, its Avatar exploded, the Victory music was played and I needed to restart the client.