I installed this activity (3.5.4 Build - 2019032100) (2018050109) on Moodle Ver 3.5.
After a test run (filled by 3 students) I realized that the Yes/No answers are not properly shown on the individual responses page.
The summary for question #1 is like this:
It clearly shows that all 3 participants supplied answers.
When the individual answers are checked they are:
There are no answers at Student #1 and #3. The result is the same if I download the .csv file.
Anybody could help me to figure out what the problem is?