Firefox 155.03Beta is not synchronizing all of users' data and making Setting's tiltles disapear.

Right after updating Firefox to 155.03Beta, bookmarks, history, and synchronized tabs are completely empty on the sidebar. No data, at all, except for AI Chatbot's xml's. Didn't downloads once appear on the sidebar, too, by option? You have to go to Tabs and Browsing >> Browser Layout and select Show Sidebar to customize any of it. Library (Downloads and History) will not even show nor import anything. Not only this, but the new appearance of the sidebar is different, and about:preferences (settings) does not show their page titles, anymore, but only their icons. Settings tried to load when first opened, but it failed to name them. Is there some configured file and/or data on the beta that will not let each of these names and icons appear properly?