[Firefox] Instant injection mode combined with run-at document-start breaks injection

[lainverse]

Open https://www.wikipedia.org/
Open dev console

Expected Behavior

Script runs, you can see 1 in the console.

Actual Behavior

Script doesn't run and there's nothing in the console.

Specifications

• Firefox: 105.0.3 (64-bit)
• TM: 4.18.0 (stable)
• OS: Windows 10

Script

// ==UserScript==
// @name         New Userscript
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://www.wikipedia.org/
// @icon         https://www.google.com/s2/favicons?sz=64&domain=wikipedia.org
// @grant        none
// @run-at       document-start
// ==/UserScript==

(function() {
    'use strict';

    console.log(1);
})();

[derjanb]

Should be fixed at 4.19.6170 (in review|crx|xpi)

Please install the BETA version or check for BETA version updates at about:addons

For a quick fix please export your settings and scripts as zip or (JSON) file at the "Utilities" tab and import it back at the fixed BETA version.

[dimisa-RUAdList]

I tested this version in Firefox 106.0.2. Everything seems to be in order.