Star Light, Star Bright

[Cromat]

Yes, you heard right; the "Star Light, Star Bright" glitch. 2 visual resources about it;
● Visual Resource [1]
● Visual Resource [2]

[Christen57]

It would help if you could describe how the glitch is happening and how to replicate it.

[Cromat]

While sneaking up on Li-Ming's Judge Calls, again I clicked "Watch Duel" button from Judge's profile and I spawned myself to that Duel room. When I entered there, that Monster Zone was already shining. After Judge left from Duel; I quitted, too. Then re-entered and, when I entered this time 2 Monster Zones was shining.