So this has just happened to me in a rating all-pick game
Basically what was strange is that vejomancer and large were first picks of enemy team. That is alright, decent supports both are strong nowadays.
But it turned out that they are in party and large is carry
But that is not the problem
The problem happened somewhere around minute 12 into the game
I was playing invo, chasing largo into enemies triangle, knowing my team will be able to help me dive and kill him and anyone else who isn't visible on map.
There were a couple stacks of both camps
What happened next COMPLETELY CRASHED THE GAME FOR EVERYONE, SHUTTING DOTA TO DESKTOP.
Largo uses his 3rd spell on venomancer, after that venomancer ulties into any creep, also agroing both camps
After his ulti spreads something happens and the game completely crashes
I reported both players for using that bug, but that doesn't help, we need devs to see that.
I tested it in demo lobby and it doesn't depend on any items, just have venomancer get level 6 and stack some camps that are close to each other
The game shuts down to desktop