you also revert debian changes, they updated the rules to not generate a specific shlibs and fix bash specify usage there and your version roll back those change, you should try to understand what ubuntu changes are there and listing those in a detailed changelog would make that easier
you also revert debian changes, they updated the rules to not generate a specific shlibs and fix bash specify usage there and your version roll back those change, you should try to understand what ubuntu changes are there and listing those in a detailed changelog would make that easier