This has been posted a few times, but I have what I believe to either be the reason or one cause of the bug. Whenever you cast an ability / active item or do a melee / parry and then immediately scope in with the ultimate after, it instant casts the ultimate without a M1 input.
Attached is a video showing what I mean:
View attachment 255995F700002.mp4
Attached is a video showing what I mean:
View attachment 255995F700002.mp4
