Firefox asks twice for my primary password when opening (and for SETTINGS)

I'm using Firefox v136.0 on a Windows 11 host. Each time I open Firefox the software prompts me two times (via a dialog) to enter the primary password. (I previously enabled and defined a primary password.) I'm also prompted twice to enter the primary password when I open the Firefox's SETTINGS page. This happens in "regular" and SAFE mode. I do not have any extensions installed nor themes installed/enabled. The only plugins that are installed are "OpenH264 Video Codec provided by Cisco Systems, Inc." and "Widevine Content Decryption Module provided by Google Inc." When I delete the primary password, the browser does not prompt me to enter the primary password on startup or when opening the SETTINGS page. FWIW, I've tried the following sequence, but the problem persists: # Uninstall Firefox # Delete as many temporary files as I can in $HOME\AppData\Local\Tmp\ # Delete $HOME\AppData\Local\Mozilla\ # Delete $HOME\AppData\Roaming\Mozilla\ # Reboot # Reinstall Firefox # Open Firefox and add a primary password # Close and reopen Firefox When I reopen Firefox, it prompts me twice to enter my primary password. When I open Firefox's SETTINGS, I am prompted twice to enter the primary password. Any suggestions as to how I can convince Firefox to not prompt me twice for the primary password when opening the browser would be appreciated.