Polls are not updated to show as voted-in on clients other than the one that voted

[OddBloke]

Expected behaviour

I should have seen the post-vote information about the poll, instead of being presented with the vote options again.

Actual behaviour

I was presented with the vote options, not the results. (A full refresh of the web interface addressed the issue.)

Steps to reproduce the problem

1. Find a poll that you can vote on
2. Open the Mastodon web interface in two clients (in my case, it was Chrome on my desktop and Chrome-as-an-app on my phone)
3. Vote in the poll using one client
4. Observe the poll not being updated on the other

Specifications

Mastodon 2.9.2 (with minor unrelated-to-polls changes); Chrome, Android and Ubuntu

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[vmstan]

Resolved in newer versions.