This will search the drupal.org issue queues across the various projects that make up the Aegir system. If there are no relevant results, please submit an issue there.
The Provision part seems pretty complete, although it would be good to double-check it.
For the Hosting part, the 2.1 release was in April 2014, so anything fixed more recently than 12 months ago could be included if I understand correctly: https://www.drupal.org/project/issues/hosting?text=&status=7&priorities=...
By definition, we should at least include Major and Critical issues, so I'll get started on those.
Oops, seems like most of the issues had been closed long before that, the updated time only refers to a batch of automatic change to the issues based on comit history.
However a lot of issues have been bumped to 7.x-3.x, so this makes finding the relevant issues a bit harder.
Oh also only bug reports are supposed to be listed, so my initial count was even more wrong than I thought!
I take Git commits to create these lists, see http://community.aegirproject.org/content/release-process#Generating_the...