I assume this is a bug and not working as intended? None of the tiers of ethereal cloaks can be reforged that I can tell. They do not show up at all on the list that opens up at a reforger. I've experienced it with expert, master and grandmaster cloaks
This appears to be intended. The 'Indestructible' tag apparent means it cannot be reforged. The question was asked in Discord:
lol and everyone was saying one of the benefits of the new cloaks over the mastercrafted one is you could reforge it...
I've heard people saying both Infusing and Reforging as an advantage over the crafting cloak. With the Indestructible tag, we cannot do either except for the Grandmaster cloak as it has the Infusable tag. Also the previous tiers can be destroyed even if it says Indestructable.
I discovered that playing around with the extra set of non tradable heroic armor on a free heroic character that started at level 85 and then auto upgraded to 90, presumably because I hadn't played it much. So what does Indestructible mean? That it isn't damaged when you're killed? That's what I was told in the forum but I was never quite sure if that was correct.