chromium - Chrome web extension DeclarativeNetRequest does not block intercept requests in main_frame

Question

I am migrating our v2 extension to manifest v3 and in the process of converting from the deprecated WebRequest API to the new DeclarativeNetRequest, I've found that the following rule does not intercept requests that originate while navigating through links, yet it does intercept the same request if the URL is entered into the address bar. I need it to intercept all requests and URL changes that happen in the top frame.

    [
  {
    "id": 1,
    "priority": 1,
    "action": {
      "type": "redirect",
      "redirect": { "regexSubstitution": "some local web server address here" }
    },
    "condition": {
      "regexFilter": "^(https?\://)?[^\:]+$",
      "resourceTypes": [ "main_frame" ]
      
    }
  }]

Answer 1

Turned out it's a bug in Opera's requests originating from the Speed Dial shortcuts. Chromium Canary does not exhibit the same issue with the start page shortcuts.

I have reported the issue to the Opera team.