Question Weird area on new monitor

[Aubichon]

Need help understanding what this is. I've seen dead pixels but have not experienced this before.

https://imgur.com/S8gYBTp

View: https://imgur.com/S8gYBTp

https://imgur.com/MxiCoOl

View: https://imgur.com/MxiCoOl

Hope the detail is there,

 

[Aubichon]

27UK850-W Is the monitor oops