Bug with custom field on delivery notes?

We have added a custom field on our delivery notes where we right batch number. This morning the field was gone. I looked in the back and nothing has changed there.

On a new delivery note now it looks like this.

If I “edit” the ones we issued yesterday the batch number field is not there but if I “view” it is.

How it looks in “View”

Cloud version: 21.2.97

Fixed in the latest version (21.2.98)