Completed Poll indication is unreliable/inaccurate

[MediaProf]

Poll will indicate 100% completion by participants.  Host will close poll, but several participants report not having completed or submitting the poll.  If "completion" means submitted then that data is inaccurate, if not can we have an indication of how many polls have been submitted? Data show typical progress, for example: "21 of 35 responses complete 60%". Eventually it will show "35 of 35 responses complete 100%".  But there are respondents who are still working and have not completed(answered all the questions on the poll) OR submitted the poll.  Is there a bug in the poll, or does "100% completed" mean something else?