User reported 🧩 puzzle icon is missing when Hide My Email is used. Not sure if the extension is blocking trackers or not in this case.
UPDATE
I've tested Hide My Email (Sonoma 14.5, MTB 1.0.11). It works with MailTrackerBlocker.
But there's a completely separate issue where MailTrackerBlocker sometimes doesn't run in Mail (evident by the MEMessageSecurityHandler ⓧ icon missing [or 🧩 icon in older versions]) even though it's enabled in the Mail Extension settings. I think it's a bug with Mail so if you experience this issue, please report to Apple referencing FB13801609.
Possible Workarounds
Disable, re-enable MailTrackerBlocker in Mail > Settings > Extensions then try selecting another message.
As a last resort, some users reported they were able to get the puzzle icon back up by uninstalling then reinstalling MailTrackerBlocker.
Note GPG Message security extension users
If you have another active Message security extension like GPG, Mail will not show MailTrackerBlocker's ⓧ icon (🧩 puzzle icon in older versions). This is expected. Mail only allows one Message security extension at a time. The issue above is specifically about MailTrackerBlocker set as the active Message security extension, yet not showing ⓧ.
User reported 🧩 puzzle icon is missing when
Hide My Emailis used. Not sure if the extension is blocking trackers or not in this case.UPDATE
I've tested
Hide My Email(Sonoma 14.5, MTB 1.0.11). It works with MailTrackerBlocker.But there's a completely separate issue where MailTrackerBlocker sometimes doesn't run in Mail (evident by the MEMessageSecurityHandler ⓧ icon missing [or 🧩 icon in older versions]) even though it's enabled in the Mail Extension settings. I think it's a bug with Mail so if you experience this issue, please report to Apple referencing
FB13801609.Possible Workarounds
Mail > Settings > Extensionsthen try selecting another message.Note GPG Message security extension users
If you have another active Message security extension like GPG, Mail will not show MailTrackerBlocker's ⓧ icon (🧩 puzzle icon in older versions). This is expected. Mail only allows one Message security extension at a time. The issue above is specifically about MailTrackerBlocker set as the active Message security extension, yet not showing ⓧ.