Last night while doing transmog runs, I decided to attempt mythic Eonar for the first time in a while on my rogue and I’m not sure exactly how it happened, but upon starting the fight and jumping to the middle spawn, the encounter just ended - not in that it was reset, it simply ended the fight as a completion and spawned the loot chest without a single mob spawning. For a moment I thought maybe the encounter had been deliberately removed due to its difficulty for a lot of classes, but then I came back on my Paladin and the encounter played out exactly as expected, having to clear waves and handle the Paraxis mechanic.
I felt I should report it as my rogue didn’t have to complete an encounter that is a significant challenge for a lot of classes/specs.