Removing attachments in Mail

When I select the command "remove attachments" I end up with a message that has the initial attachment removed, but with a new attachment, small in size, named Mail Attachment.txt that says that the iniital attachment was removed (used to be just text in the previous Mail versions).

As I select a command that promises to get rid of attachments, I exchange it with a new one. Very irritating. How can I have it really removed all the way, and rather have the remove confirmation in text again?