https://bugzilla.mozilla.org/show_bug.cgi?id=1786919
They have merged a change that makes it impossible to access and download certain website content the user is viewing and wants to process. Now that Firefox has introduced this limitation without offering an alternative, it is now much easier to port some of my extensions to Manifest V3 on Chrome, despite Chrome not supporting the blocking webRequest API.
It's disheartening to see how these changes are introduced without any planning or care for how it affects extensions that are being ported to Manifest V3, and the general lack of respect towards extension developers.