So I’ve been playing the Death Knight on PTR and I’ve noticed that unholy DK permanent ghoul, disappears when you fly your mount. Normally when you touch the ground and dismount, the ghoul should get the “crawling out of the ground” animation and re-appear.
In this case this does not happen, and you have to use a reagent to summon him once again. Which can be annoying when you mount up and fly to get to the next enemy.
There was a few hours where my ghoul kept re-appearing. But later reverted back to the Ghoul not coming back, even when changing zones (outland to azeroth).