Hi

Thank you for your question. This is something that we are currently looking into and hope to be able to respond to you soon with a more complete answer.

Are you using the startup setting to restore the previous session automatically or do you use "History -> Restore Previous Session" ? You may have to check "History -> Recently Closed Windows/Tabs". This might be best:

• Settings -> General -> Startup -> Open previous windows and tabs

Use one of these to close Firefox if you are currently doing that by clicking the close X on the Firefox Title bar, especially if you have multiple windows or Private Browsing windows open to prevent losing tabs in unnoticed windows.

• "3-bar" menu button -> Exit (Power button)
• Windows: File -> Exit
• Mac: Firefox -> Quit Firefox
• Linux: File -> Quit

Thank you, the feature seems to be working now as before.