HTML Export - PW for Custom Fields not working

Good day,
We export our customer documentation as HTML which encrypts the individual passwords with a password. This works wonderfully for our use case. However, we have noticed that if we have an encrypted custom field in a password list, this cannot be decrypted with the password set for the export. We get the message that the wrong password was used to decrypt. However, the password works for all other passwords in this export.
Could you look into this?

Client Version 2023.1.12.0

Greetings,
Niklas