Form property "Auto Launch: First Attachment"

Hi

Recently I fixed one strange bug.
Actually, I did it in a one minute, because it was quite obvious how to do that but anyway I want to share my solution since it can help someone less experienced in Lotus Notes.

The case is next: you have a form with a RichText field on it and you enabled form property "Auto Launch: -First Attachment-"

Create a document and attach any file into RichText field.

Try to open this document from Notes.
You will get a warning with something about "-No Signature-".
Like this one:

Since Lotus Notes says something about wrong signature, let's just sign document after UI save.

Now document opens without any warnings.

Enjoy.

Lotus Powa!