TBB on Linux leaks info to terminal

A Reddit user wrote this post saying TBB is leaking information about the sites a user is trying to visit (i.e. unresolved domains) to the terminal.

Below are steps to reproduce, according to the post. I have not tested this myself.

1. Visit an invalid domain, such as asdfghjklkjhgfdsasfgjhk.com or a .onion URL.

2. Click "Try Again".

3. Change the tab and change back.

The following messages appears in the terminal:

(about:neterror?e=connectionFailure&u=http%3A//www.asdfghjklkjhgfdsasfgjhk.com/&c=UTF-8&d=Firefox%20can%27t%20establish%20a%20connection%20to%20the%20server%20at%20www.asdfghjklkjhgfdsasfgjhk.com.) Could not check applicable rules for about:neterror?e=connectionFailure&u=http%3A//www.asdfghjklkjhgfdsasfgjhk.com/&c=UTF-8&d=Firefox%20can%27t%20establish%20a%20connection%20to%20the%20server%20at%20www.asdfghjklkjhgfdsasfgjhk.com.