Hello, I'm experiencing an issue with Firefox Sync that has become increasingly frustrating over time. Every time I reinstall Firefox on a new system and sign in to my Mozilla (Firefox) Account, not all of my previously selected settings are restored, only some of them appear to sync correctly. For clarity, I have Sync configured to include only the following: * Bookmarks * Add-ons * Settings I intentionally '''do not''' sync: * Passwords * History * Addresses * Open tabs * Payment methods Despite syncing "Settings," many of my custom configurations (such as certain privacy preferences and UI tweaks (customized toolbar) do not get restored. This forces me to manually go through all the settings each time, compare them to my previous setup, and reconfigure Firefox, which defeats much of the purpose of having a sync feature in the first place. I have never faced this issue with Chromium-based browsers, where settings sync tends to be more comprehensive and consistent. My questions: # Why are some Firefox settings not included in the sync process? # Is there a documented list of which settings are actually synced when "Settings" is enabled in Sync? # Are there any plans to improve the completeness of settings synchronization in future Firefox releases? Any insight or official guidance would be greatly appreciated. I really value Firefox, but this ongoing sync limitation is making it harder to maintain a consistent browsing experience across devices. Thank you for your support.