https://www.reddit.com/r/CompetitiveWoW/comments/f4zz5g/undocumented_change_with_explosive_orbs_in_83/
I use the weakaura called [automarker]. What it essentially does is mark specific enemies based on their NPC ID while in combat. Things that normally require an interrupt, stun, higher priority etc…
By default the WA doesn’t include explosives as an option but thats a simple change on my end to add the [NPC ID: 120651] which is easy to find in the tooltip when you mouseover them in a dungeon.
So what is the problem?
Since 8.3 ive been noticing this week that the weakaura no longer marks explosives as they spawn. This is because previously you would immediately be in combat with them until 8.3. Now when they spawn they are no longer in combat until YOU personally hit one, not just someone in your party. Thus the weakaura no longer works as quickly as it did before.
This seems like an undocumented change in 8.3 as I would always immediately be in combat up until the most recent major patch.