I'm seeing the same thing in Firefox 57.0.3 on Debian, if my viewport is more than or equal to 1320 pixels wide. It goes away for the text on screen if I force it to repaint, but comes back if I scroll or resize the viewport.

Thanks for the report.

Same problem here. Seems to be a font rendering issue, the strange artefacts disappear at certain zoom levels. My platform is Fedora 27 with Firefox 57.0.1.

Thanks for the report. I'm thinking to change font.

Thanks for your report, which browser are you using to take the screenshot ?

I used the default markdown plugin to generate paragraph markers and I found convenient to link directly to a paragraph.

I'm using Firefox 57 on Ubuntu. You may want to hide the markers until someone hovers over the title in question, like in the Django docs[1].

[1]: https://docs.djangoproject.com/en/2.0/

I updated markers as you suggested, thanks again http://www.paulox.net/2017/12/22/full-text-search-in-django-...

Looks much better, good job!

Thank you!

I'm using Firefox 57 on Ubuntu 17.10. Thanks for your suggestion about the paragraph markers. I'll update it. ;-)