Service worker "tabless" requests with correct context are still modified when page is whitelisted

[gwarser]

Prerequisites

• I verified that this is not a filter issue (MUST be reported at filter issue tracker)
• This is not a support issue or a question
• I performed a cursory search of the issue tracker to avoid opening a duplicate issue
• The issue is not present after wholly disabling uBlock Origin ("uBO") in the browser
• I checked the documentation to understand that the issue I report is not a normal behavior

I tried to reproduce the issue when...

• uBO is the only extension
• uBO with default lists/settings
• using a new, unmodified browser profile

Description

Service worker requests are still modified by *$removeparam=sid on https://forum.vivaldi.net/ even when page is whitelisted. This may cause page navigation issues as reported on https://www.reddit.com/r/uBlockOrigin/comments/oh4i48/help_with_vivaldi_forum/. I was able to confirm by Logger and in DevTools that requests are modified.

A specific URL where the issue occurs

https://forum.vivaldi.net/

Steps to Reproduce

1. add *$removeparam=sid
2. open https://forum.vivaldi.net/
3. make sure service worker is installed and works (reload or close and open page again)
4. try navigating in forum threads
5. page shows "Looks like your connection to Vivaldi Forum was lost, please wait while we try to reconnect." - this can be used to confirm that *$removeparam=sid causes issues on page
6. click blue power button to whitelist the page

Expected behavior

Request should not be modified anymore.

Actual behavior

I can confirm by looking at uBO Logger or browser DevTools that requests are still modified. There seems to be issues when navigating the page as logged-in user, as reported on https://www.reddit.com/r/uBlockOrigin/comments/oh4i48/help_with_vivaldi_forum/.

uBlock Origin version

1.36.2

Browser name and version

Google Chrome Version 91.0.4472.114, Vivaldi?

Operating System and version

Manjaro KDE, Windows?