So I have started leveling my rogue, and it seems that some actions when doing some quests mess up the scaling.
I have been doing the quests in Azshara where you have to grab the petrified goblin and carry them back to the quest giver, I had moved too early after right-clicking the goblin so I did not pick the npc up, I could not use movement-altering abilities or Shadowstep, when I tried to do so, it said “You’re mounted” (or whatever error text says) and mobs were hitting me extra hard while I was doing next to no damage.
The same occurrence happened while on the quests with the Gob Squad, as soon as one of the goblins approaches one of the obelisks to blow them up, it messes with the scaling again.
There have been other circumstances while questing but I cannot recall the other quests.