I can also confirm that update-manager 1:0.93.32 was not displaying changelogs and the 1:0.93.34 does, though I'll note that I was not seeing changelogs even with a matching "deb-src" line. Either way, the package in proposed displays changelogs and continues to install updates, etc.
(I do note that apt-cacher, when used as a proxy via setting the apt-config Acquire::http::Proxy option, does not proxy the changelog information, but I'll file that as a separate bug against apt-cacher.)
I can also confirm that update-manager 1:0.93.32 was not displaying changelogs and the 1:0.93.34 does, though I'll note that I was not seeing changelogs even with a matching "deb-src" line. Either way, the package in proposed displays changelogs and continues to install updates, etc.
(I do note that apt-cacher, when used as a proxy via setting the apt-config Acquire: :http:: Proxy option, does not proxy the changelog information, but I'll file that as a separate bug against apt-cacher.)