Several other people reported this on Reddit as well. Common link seems to be Ironhawk, although 1 player didn’t specify if they used Ironhawk or not.
My hawk bombards to death the last enemies before the ability is activated and the game just stops there. No frozen, since the small animations are still there, but I can’t even retreat
Same thing happened to me the other day with iron hawk.
Same but with a different team
Also, these other 2 bug reports looks like the same issue: