[Q] Strange vertical lines on screen topic

So hey guys.

I bought myself a refurbished Nexus 5 off of AliExpress. I love everything about the phone except what seems to be something odd with the screen. Mostly works fine, but quite often grey and white vertical stripes appear down the screen (as you can see in the attached photos) They seem to appear when I swipe in the same place a lot and will disappear after a minute or two, or sometimes if I swipe the other way. Almost like a smudge or a smear but with what looks like the light from the screen. It's very noticeable on white and grey backgrounds.

I just wanted to know if this is a normal thing for this type of LCD screen or whether you think I should contact Ali regarding them sending a new one? I could probably live with it if it's a normal thing, but it's annoying and noticeable enough for me to have posted on here.

Thanks in advance for any answers I get.

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