Since Firefox 96 (maybe 95) I cannot set breakpoints in code

I’m using firefox to debug my angular project for a few years now but since a week or two I cannot use the debugger anymore. It works perfectly with chrome though.

When I launch a session via the run and debug module of vscode, firefox starts but:

• the debug console is empty
• I cannot set any breakpoint in code
• clicking the refresh button in vscode does not work
• clicking the stop button kill the debug session but do not kill firefox

It seems they are not linked anymore. Others do not have this issue I guess as I do not find an open issue in this repo or references on the web. Yet nothing changed on my part except updating firefox.

Don’t know what to check at that point. Any help appreciated. Thanks.

My conf:

{
      "name": "Launch Firefox against localhost",
      "type": "firefox",
      "request": "launch",
      "reAttach": true,
      "url": "https://127.0.0.1:8080",
      "webRoot": "${workspaceFolder}",
      "profile": "default",
      "keepProfileChanges": true,
  },

VSCode: 1.63.0 Firefox: 96.0b3 OS: macOS 11.6.1

[hbenl]

@jeandat The PR doesn’t go into Firefox but into version 2.9.6 of this VS Code extension, which I have just published.

[pablofierro]

👋 I’m experiencing similar issues where my project is no longer working with Firefox 96 (dev edition), I’m seeing the following logs:

WARN |000.105|TabActorProxy: Unknown message from TabActor: {"from":"server1.conn14.child10/windowGlobalTarget2","error":"Error","message":"Spec for 'windowGlobalTarget' specifies a 'attach' method that isn't implemented by the actor","fileName":"resource://devtools/shared/protocol/Actor.js","lineNumber":170,"columnNumber":17}