I recently updated my drivers for nvidia and white lines appear in between every block in every version of minecraft. I can play every game fine with no problems.
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I am experiencing such incidents as well since only recently; and I use AMD and have gotten no updates, this just... happened or something.

Dupe of MC-1794

I had this problem also after updating, but fixed it by turning Anisotropic Filtering off in the graphics card control panel for Java/Globally. Try that 🙂