#1 - Aug. 19, 2018, 5:45 p.m.
I took the first screenshot with all my gear on, then vendored a ring, and the mob HP went down instantly.
So we are back as in Legion, leave a ring or trinket in your bank.
Note that simple putting them in your bag won't cut it, it needs to be in your bank, or permanently gone (vendor, disenchant, scrap).
Screenshots:
https://drive.google.com/open?id=1Qrrm4TJQR1sx7uWsIg5MefRaXeJdAoJU
https://drive.google.com/open?id=1Tddg3DoZ-WdoeSnzS1j_IVDCys3uvSw8
We need to start again removing our gear to play until we force Blizzard to back track on this!
Edit 1
People complaining it's a small scale up...
Yes it's small, but it's a principle, if I get 10 ilvls stronger, I want to be 10 ilvl stronger, not 8 because the content also got harder!
Edit 2
Yeah not a completely new thing, but a lot of people were not sure if it was carried over in BfA, now I cleared that up.
Edit 3
See also
https://eu.battle.net/forums/en/wow/topic/17622582987?page=5#post-86