(I tried including an imgur link here but it won’t let me; screenshot of me standing next to 4 raid markers placed right up against one another with no overlap or space between; X at the far side, square next to me) - 4 raid markers’ worth of distance. I pulled mobs standing at X to where I’m standing just behind square, and they would repeatedly evade and run back to X. This is The Dread Pit delve.
Earlier today while questing in The Ringing Deeps, I gathered a bunch of mobs and fought them right next to the original position of a couple of them- they evaded and ran back, only to immediately re-aggro me because I was within aggro range.
This has been happening all day while I’ve been grinding Assembly rep. It’s getting pretty frustrating. Gather pull, blow CDs, have it evade, fall apart, and reset, re-gather, repeat.