It affects both neon user edition and dev unstable. When I try to install k3b-dbg package I get this message: "The following packages have unmet dependencies: k3b-dbg : Depends: k3b (= 2.0.3-0ubuntu5) but 17.08.0+p16.04+git20171124.0022-0 is to be installed E: Unable to correct problems, you have held broken packages."
The new packaging does not contain debug package, therefore it is pulling an old -dbg package in archive. Adding debug package to new packaging now.
this problem persists on neon dev unstable.
dbgsym package can be installed instead dbg.