Shiny and gold elite level troops in "PVP"

Platform, device version and operating system: Android, Samsung Galaxy S22

Screenshot or image:

What you were expecting to happen, and what actually happened:
Since all PVP regions except for central spire use fake players with random troops right now, I was not expecting to see any shiny or elite level troops, in line with other PVE modes. However, as you can see above, I fought an opponent in Geheron with a gold elite level Nebuladryx. I also found a shiny level 1 (same as my shiny level) Sir Ailuin in Summer Isle, but forgot to get a screenshot.

How often does this happen? When did it begin happening?
This is the first time that I have noticed gold elite level troops in region restriction PVP, but I will keep an eye out.

Steps to make it happen again
Participate in region restriction PVP. By the way, when will we start fighting real accounts in region restriction PVP?

AFAIK they are real accounts and they are their troops, just a random selection of them not the team they have set by attacking the region. That’s why you see some traited, some not, some shiny, some medalled.