How to reproduce:
Step 1: Publish a poll and do not check any of the check boxes

Answers are named

Step2:
edit the poll and set "anonymous votes"
it works, you cannot see the names in answers
Step3:
try to go back to named answers.
It's not possible. The "anonymous votes" checkbox is not displayed anymore.
It should be possible because the names are still in Table : poll_answer_user
I have in mind it'sa bug
How to reproduce:
Step 1: Publish a poll and do not check any of the check boxes
Answers are named
Step2:
edit the poll and set "anonymous votes"
it works, you cannot see the names in answers
Step3:
try to go back to named answers.
It's not possible. The "anonymous votes" checkbox is not displayed anymore.
It should be possible because the names are still in Table : poll_answer_user
I have in mind it'sa bug