The remote content button has disappeared and there is no way for me to see the remote content anymore, I went to setting and checked "allow remote content" and it still doesn't show.
Additional System Details
- User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1
The remote content button/notification bar isn't displayed if you have View/Message Body As set to anything other than Original HTML. What is your setting?