Can't say Iv'e heard of this before,the only thing I can think of is if you downloaded the screensaver from the internet did you do a virus check on it? these are notorious for containing viruses (.scr extention)hope this helps.
OnePlus 5T review: Hands-on
Illustrator Andrés Lozano on his improv line work, brazen use of colours & hand sketching
iPhone X review
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