I have tested all the versions from -proposed (2.2.6-0ubuntu1~16.10.1, 2.2.6-0ubuntu1~16.04.1, 2.2.6-0ubuntu1~14.04.1) and they all install correctly on clean chroots (tested using ptest). No package installation errors, dependencies pulled in as expected.
I have tested all the versions from -proposed (2.2.6- 0ubuntu1~ 16.10.1, 2.2.6-0ubuntu1~ 16.04.1, 2.2.6-0ubuntu1~ 14.04.1) and they all install correctly on clean chroots (tested using ptest). No package installation errors, dependencies pulled in as expected.