Comment 3 for bug 1399924

In the log file DpkgHistoryLog.txt show than sudo package would be replaced by the same but different architecture (amd64 -> i386).

You installed a package of i386 with Depend (not Recommend or Suggest) to sudo:i386 package or Conflicts with sudo:amd64 forcing to change to i386 binary. Because the Arch change is (remove and install) not reinstall nor up/downgrade, sudo package show the warning and cancel the installation by system integrity.

Please check the broken package than cause this issue because I reinstalled, upgrade and downgrade with this version and I can't reproduce the bug.