Habragluki: What kind of "Hubs" did these still exist?

Question

Habr

I wanted to write a question, and suddenly, in addition to the title, there were some incomprehensible Hubs
, and from 1 to 3. What the hell?
Nihachu no Hubs to add to the question.
I had to "Sandbox" to this issue to attach.
UPD1: Okay, let's say we figured out the Hubs (not really).
— How to add a new Hub that would best fit a specific issue? (when trying to type the name of the new Hub with pens, it says not found).
- The Q&A Hub (especially for questions) is really lacking, maybe I was looking in the wrong place? But it didn't make it on my list. writes:

Specify the hub where the post will be posted.
You can specify up to 3 hubs at the same time
Select from 1 to 3 hubs

I would also like to be able to specify ZERO hubs for the question (instead of not adding random "Left" hubs).
Yes, I almost forgot:
Is it just me that mu-habr does not open or does everyone have it?
Yes2, and even after the spring update , my profile does not open. Corrected.

Answer 1

habrahabr.ru/company/tm/blog/139896/

Answer 2

https://dchublist.ru/forum/