It’s been 3 weeks since Season 7 came out and the vibration on controller has been bugged ever since.
As of the latest patch of today, the vibration seems now completely broken. Controller vibrates now to enemy input, in addition to being faulty.
This problem has been reported multiple times and is considered urgent:
https://us.forums.blizzard.com/en/overwatch/t/vibration-on-controller-buggy/852889
https://us.forums.blizzard.com/en/overwatch/t/mercy-healdmg-boost-vibration/853469
https://us.forums.blizzard.com/en/overwatch/t/buggy-controller-vibration-ps4/853539
https://us.forums.blizzard.com/en/overwatch/t/mercys-vibration-when-healingdmg-boosting/854697
https://us.forums.blizzard.com/en/overwatch/t/mercy-moira-vibrations-not-working/853131/7
https://us.forums.blizzard.com/en/overwatch/t/new-rumble-effect/857906
https://us.forums.blizzard.com/en/overwatch/t/random-controller-vibrations-in-game/857953