This is the second time this has happened and it seems that Multi select and grouping more than 12 objects at a time will completely crash the game.
Also I think this further pushes the fact that forge can significantly benefit from an auto save function that saves a separate backup of each file every 15- 30 min and each time the game is exited or lagged out of due to connection issues.
Yup, I’ve been having this problem too. I was gonna make a thread about it but then saw this one. Hopefully this gets fixed soon as it can be quite frustrating to lose work like that.
Knowing how 343 is handling updates, I don’t think we’ll see a word on this until the next update. I hope for a hot fix or at least acknowledgement.