@Eric81,
Thank you for reaching out to us.
This appears to be similar to an issue the team is working on addressing presently. Can you please tell me what happened before you opened your browser and the passwords were gone? For example, did Brave update in that time? Did you shut your machine down or put it to sleep? Etc.
Additionally, can you please confirm whether or not you’re using Windows 10 or Windows 11 at this time?
Thank you