[Pkg-mozext-maintainers] Bug#920652: ublock-origin: host list is not displayed, blocking does not seem to work

[Markus Koschany]

Package: webext-ublock-origin
Version: 1.18.2+dfsg-1
Severity: important

ublock origin version 1.18.2+dfsg-1 fails to display the list of
blocked or existing hosts which you can see when you toggle "all". There is no
indication that the addon blocks any content at the moment. All the
menus appear to work though. I tried to debug the issue but could not
find a solution hence the upload to experimental.

When I use Firefox' debugging mode for addons, about:debugging, the
console displays three errors: The first one is caused by a missing MIME
entry for wasm files. This is Firefox bug

https://bugzilla.mozilla.org/show_bug.cgi?id=1500710

You can add the line

application/wasm                    wasm

to /etc/mime.types

and uBO's wasm modules will be loaded again. However that does not
seem to address the issue at hand.

Then I can see an Unchecked lastError value Error: Could not establish
connection. Receiving end does not exist. webrequest.js:115

Finally there is also a

TypeError Argument 1 of PrecompiledScript.executeInGlobal is not an
Object

ExtensionContent.jsm:497:18

I am at a loss at the moment.