Thanks for a great plugin and all of the work that you do to maintain it. I'm looking forward to the fix for the feedback issue, but wanted to report that our experience seems to be a little different from what I've see reported.
Moodle 3.1+ (production site)
Moodle 3.1.1+ (test site)
Poodll Feedback 1.0.6 (Build 2015121101) on both sites
The PDF markup Moodle feature seems to work fine with Poodll in place (my understanding is that other sites have reported that feature not working if Feedback Poodll is installed). Our only issue is that there is no option to save the audio feedback:
We are disabling Feedback Poodll for the time being - looking forward to a fix!