Both those exact things have DEFINITELY happened, and quite recently too!
- At least two (three?) Campaigns launched on Switch with the paid rewards track incomplete (no campaign pet/weapon/mythic), though each time it was resolved quickly, presumably before players could actually reach the relevant tiers.
- Event chests were misconfigured over Christmas during what was supposed to be a Sword’s Edge week, except (among other things) event chests were awarding Adana troops.