… and, yes, disabling the object cache as described above (Settings > Object Cache, then click on Disable) fixes the issue.
@josh-virkler: Please do post back if you get any news from Cloudways support!
Just chiming in here to say that I’ve got the exact same bug.
The forums have been working fine for a year or two.
Suddenly, the first post (opening topic) of each new thread that is posted is no longer visible.
And… our website is also hosted by Cloudways.
I haven’t tried any of the solutions mentioned here yet.