Disappearing lines in editor

i’ve noticed that sometimes a line a code will disappear and after i scroll away so that the line is off screen then scroll back to it, it will reappear, anyone else notice this?

if i put a cursor it will act as of the text is there but it’s not visible

I’ve seen vanishing lines but only when they were very long. My base64 encoded zip library had to be split across 2 lines so the text was actually visible.