I’m seeing the same behavior: “Popular Posts” and “New for you” topics being repeated.
In this case one Popular Post is tripled, another is doubled:
Self-hosted standard installation here, current at 3.4.0.beta2-dev (f2121cc437).
I see this report dates back to Feb. – anything happening? Any further details I could provide to help?
EDIT: if anything it’s getting worse. I’m now seeing the lead Popular Topic tripled. It’s really not a good look – I’d love some suggestions for pursuing troubleshooting this.