Bcc field in mail "chopping off"

I sent an e-mail to several people and used the “bcc” field to do it. I had copied that list from an earlier e-mail I had sent in the same fashion - I was using R5 then. I thought all was good until I went to look at that e-mail in my sent folder and noticed that it “chopped off” that list after so many characters.

So, I copied them again and verified that they all copied over. When I hit the “Send” button I saw Notes literally “chop off” everything after a certain number of characters.

Is anybody else experiencing such a bizarre problem? It’s as if Notes has limited the number of characters in that field or something and there’s no way around it…