I came across the same issue (flagged by Katharine from Walk Free)!
Seems to have to do with the 'Status' filter, when it is set to 'All'
Laureen van Breen.....2019-08-29 16:13:01 UTC
As discussed in Slack, this was happening because there were a bunch of answers in the lookup table that did not correspond to actual answers, meaning something went wrong in the syncing process, probably during a deletion or renaming. I have fixed the data and am tracking the underlying issue.
Ethan McCutchen.....2019-10-03 14:43:48 UTC