Prerequisites

• I performed a cursory search of the issue tracker to avoid opening a duplicate issue
  • Your issue may already be reported.
  • I also searched the existing issues at https://github.com/gorhill/uMatrix/issues
• This is not a support issue or a question
  • Support issues and questions are handled at /r/uMatrix
• I tried to reproduce the issue when...
  • uMatrix is the only extension
  • uMatrix with default lists/settings
  • using a new, unmodified browser profile
• I am running the latest version of uMatrix
• I checked the documentation to understand that the issue I report is not a normal behavior

Description

The site "https://forum.manjaro.org/" and all of its subpages shows a "Corrupted Content Error"-Page if and only if loaded via link (e.g. google search).
The page will load correctly after a simple refresh, or if the link is copied and pasted into a new tab directly.
Even if everything uMatrix is completely allowing everything for this site and is not spoofing anything.

A specific URL where the issue occurs

Click first link:
https://www.google.com/search?q=manjaro+forum+gnome&ie=utf-8&oe=utf-8

Will work with a direct copy&paste into a new tab:
https://forum.manjaro.org/t/manjaro-gnome-17-0/18993

Steps to Reproduce

1. www.google.com
2. Manjaro forum gnome
3. Click first link
4. Corrupted Content Error
5. F5 (reload)
6. Site is shown as expected

Supporting evidence

Your environment

• uMatrix version: uMatrix 1.3.14
• Browser Name and version: Firefox 62.0.3 (64-bit)
• Operating System and version: Manjaro with Gnome (kernel 4.19.0-1-MANJARO)

Did not test on other browser/OS