New bug for I20, or known issue?

Proc120 effects remain on the player when zoning and stack with new proc120 effects. For example, you have Miracle: +Recovery slotted in Health. You enter a new zone or mission. You retain about 120 seconds worth of Miracle: +Recovery buff from the last zone, while your new buff from having it slotted in Health stacks with the old buff. This has worked with multiple zone changes, and every proc120 I could test.

It's been that way for a LONG time. The game 'forgets' where the buff came from when you zone, so it lets them stack. This is the same effect that lets a buffer stack shields on the team as long as they buff before and after the target zones.

I dont know if its a known bug, but yes you are right. It doesnt follow up as it used to be.