Using Ghostery will result in being logged out of Medium when you land on a Medium story that lives on a custom domain.
We contacted Ghostery support about this and they provided the following guidance:
The issue users are experiencing is due to the anti-tracking suite. This is a known issue on our end and we are working to improve the anti-tracking suite so that it doesn't interrupt login sessions like this. We apologize for the inconvenience. At this time the response for this is to turn off anti-tracking and the login session will not be interrupted. We are happy to take support inquiries regarding this to email@example.com.
Turning off anti-tracking:
- Click the blue Ghostery extension icon.
- Click Detailed view.
- Click the shield icon that represents "enhanced anti-tracking" to turn off anti-tracking.
- Refresh the page.