Turns out Firefox has a similar issue, despite mitigations :( https://bugzilla.mozilla.org/show_bug.cgi?id=1372288
This only happens if the extension puts their `moz-extension://` links into the DOM. It's different to chrome case where extensions can be detected regardless of being activated on that site or not.
alt Hacker News
This only happens if the extension puts their `moz-extension://` links into the DOM. It's different to chrome case where extensions can be detected regardless of being activated on that site or not.