A while ago, the text on my Chrome browser on my phone has had bits missing sometimes. Not whole letters, but it's like someone has taken a small brush with white paint and done some strokes on the screen. It'll go away if I zoom in/out. It'll just happen. Also had it go crazy when I highlighted text once.
I had something similar a couple of years back, al;so with chrome. Couldn't figure it out so I just stopped using Chrome on my main PC. Never seen the same problem on my phone or Windows tablet though.