The green smiley can be tricksy. 
That means you’re on the latest version (2.9.0.beta4), but if you’re on ‘test-passed’ (the default Discourse branch in a standard install) you/an admin can check to see if there are any fresh commits in between versions by clicking on the ‘Perform upgrades here’ link (which takes you to the /admin/upgrade page), and update to the latest commit from there (though some forums do follow the Stable or Beta branches, and will update according to their respective schedules instead).
I’m not sure if updating will help us narrow down the issue in your case, but it’s one of the first things to suggest as it can save a bit of time if it does magically fix it. 