In the documentation, theres areas that are blurred, but inconsistently.
For example, this page (Scenes | Narrat Documentation):
And because it is removed on focus, while scrolling through the page, pieces are blurred and unblurred momentarily. My eyesight not being what it once was, and my glasses being damaged and needing to be replaced, for some time, I thought it was me that was the problem, until I was able to reproduce it. For the past few days, I thought my vision was deteriorating faster than I’d like. 
Section in question:
