Pinned tabs disappear from main browser window AFTER using "New private window" browser to test a different site issue. This has happened a few times for me. It is very cumbersome and should not be necessary to do a problem search and see all the steps needed to follow using the sessionstore.jsonlz4 process. Why can't Firefox have simple "restore PINNED tabs" history? I am going to plan on saving each link for each pinned tab in a document of my own simply because it is EXTREMELY annoying and TIME CONSUMING to try to get each of them back. Why does the "New Private Window" use cause this issue in the main browser window?