No… I’m not. We all make mistakes. I’m just wondering if you made a mistake and didn’t realize it at the time.
I don’t think you’re lying. Not intentionally. I’m just trying to point out that screenshots and videos would be of great help to back up your report.
If you took the time to even read How to Write a Good Bug Report you would know this. Here is a quote:
Finally, it always helps to attach a link to Imgur (or another picture hosting site) that displays a screenshot of the bug. If you need to include a video, link to a video as well.
What Mats? You still have the Weapon. It hasn’t changed. Sure, it costs a lot of Gold to craft 3 Flawless Royal Emeralds. But, that shouldn’t be an issue. If you’re at a point of augmenting your gear, you should be farming high enough Torment Levels to get plenty of Gold. You only need 12 Death’s Breaths. And you said you used a Rank 35 Bane of the Powerful.
In the time you’ve spent posting in this thread, you could have augmented all 13 pieces of your gear.
And they probably won’t. Here’s another quote from How to Write a Good Bug Report:
We read every single thread that is posted on this forum. However, we will not always respond to every thread. If you do not get a blue response, please DO NOT bump posts. We will ignore and possibly delete any post that simply says “Bump” or demands a response from a Blizzard poster.
And that’s why some of us players try to help out. But, as I said earlier, if you don’t want the help…
Just for the record, I’ve tried to reproduce your “bug” with my Demon Hunter on the Asia Region. I used:
- 1 Ancient Hellfire Amulet
- 1 Rank 50 Bane of the Powerful
- 3 Flawless Royal Emeralds
It worked just fine. You can see her here (of course it’s in Korean):
https://kr.diablo3.com/ko/profile/Perusoe-1251/hero/71940491
And, if Blizzard’s QA Team tried to reproduce this, I’m sure they got the same results.
Just a side note: I don’t augment any of my gear and complete every Season… on three Regions. Americas, Europe and Asia.
The only item I augment is one I have to in order to complete a Season Journey Objective. In which case, it doesn’t matter which item I augment. Only that I get credit for the Objective. 
Of course, it would be wise to augment the proper items if you plan on pushing the Leaderboards.