LiveStream Widget does not refresh (when post+comments selected)

Have one widget (Live Stream), where I want to show update about posts and comments.
When widget is configured to limit changes to posts - it works without the problem.
When I switch it to all (post+comments) it does not refresh automatically. New post or comment can be seen only after page is refreshed.

Any hint how I can fix that?

This thread
claims it was fixed, however no description (how the problem was fixed) was provided.