Question Vertical line on monitor sometimes appear and dissappear, should i warrant it?

[Giant Hunger]

Hi there, i just bought this p2715q 4k monitor back in april and recently this week there has been vertical line appear and dissappear sometimes.
I know the problem isn't my gpu because i use a quad monitor setup hook up to my rx 5700 xt and all of them doesn't have any vertical lines except for this one.
As of writing this right now the vertical line has disappear. It has appeared for quite sometime now.
What should i do?
Should i change my display port cable? Or should i warrant my monitor? And will they accept my warranty if theres no line when i bring it to them?
Here is the verticle line( sorry for the bad camera quality)

 

[Lutfij]

i just bought this p2715q 4k monitor back in april and recently this week
If you've verified that the issue is compounded to one monitor and the issue only crops up on the monitor you're pointing at, while the monitor is hooked to another display source, on a donor system, then yes an RMA is warranted, provided ofc, that you're within the warranty period for the panel.

If you could, see if changing cables and changing to another display output port on your current platform alleviates the issue.