Some other discussion about it:
Password-protected databases no longer work with 1.113, no rollback possible
Done as part of some Aug 2019 work. Dodged this encryption issue by chance…
Next time will not be that lucky. If I understand you, Windows Duplicati will break.
Would you like to open a GitHub Issue so that it can be tracked by development?
You look like you probably know C#. Would you be able to help with the solution?
Duplicati exists and improves thanks to volunteers. More are welcome anywhere.