If you are seeing this in your email inbox

You are automatically subscribed to the Feedback and Bugs categories by default, which you can change in your user settings.

For more information, refer to this topic:

From the settings I have removed preferences for bugs, feedback, etc.

I will update you if I still get any email notifications where I am not involved.

Can confirm this is affecting all recent users (not sure when this default setting was changed). My new test account with default options has been receiving emails of every single reply from the Feedback and Bugs categories.

Issue resolved for users created after date of this post: