1502606 - Failed to load . A ServiceWorker passed a promise to FetchEvent.respondWith() that rejected with ‘Error: TypeError: NetworkError when attempting to fetch resource.’.

Status: RESOLVED INVALID

(Firefox :: Untriaged, defect)

Description

[sloxy]

Attachment: firefox-clojureverse-err-msg.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0

Steps to reproduce:

Up to date Firefox on up to date Windows.

1) visit a discourse forum website: e.g. https://elixirforum.com or https://clojureverse.org/ - from here on known as siteX

2) visit some other site (google.com)

3) visit siteX


Actual results:

- Corrupted Content screen displayed
-console has error message shown: 
> Failed to load ‘https://clojureverse.org/t/java-10-announcement-implications-for-clojure/1583’ 2. A ServiceWorker passed a promise to FetchEvent.respondWith() that rejected with ‘Error: TypeError: NetworkError when attempting to fetch resource.


Expected results:

Site should have loaded normally.

Comment 1

[sloxy]

to note:

- more info & discussion at https://meta.discourse.org/t/firefox-experiences-network-protocol-violation-on-discourse-based-websites/97308/

- disabling uMatrix extension allows sites to behave correctly BUT

- not an issue in Chrome with uMatrix enabled

Comment 2

[sloxy]

opened issue on uMatrix at https://github.com/uBlockOrigin/uMatrix-issues/issues/79 to track.

This this may be Firefox behaviour as root cause but it just manifests due to something legal/allowed uMatrix is doing

Comment 3

[sloxy]

potential fix coming in upcoming uMatrix release: https://github.com/uBlockOrigin/uMatrix-issues/issues/72