Highlights disappear immediately

Hi, I noticed that my highlights on this website disappear immediately after loading:

On other websites, this doesn’t happen though.

  1. Which browser, operating system and versions of those are you using?
    Chrome 88.0.4324.104 , Windows 10,
  2. Which version of Memex are you running?
    2.12.2

Thanks for your great work on the extension :slight_smile: