Hi Robert! * Robert Luberda <robert@debian.org>, 2016-03-01, 23:59:
But to be honest I have no idea why this tag is produced for packages that have no Multi-Arch field at all, which implies that that are `Multi-Arch: no' already...
It was a bug, but I believe I fixed it in 2.5.41. If it's not fixed, please tell us how to reproduce it. -- Jakub Wilk