Missing smooth transition animation for replies in existing topics

[PanSevence]

Hello, I've recently noticed an error in my community. As we know, when adding a post in a thread, there's a smooth animation that plays. I've observed that if I create my own topic, this animation appears correctly, but when I reply in a topic created by someone else or an older one, this post-adding animation (the smooth transition) does not appear. Could this issue be related to using Cloudflare? How can I fix this error? Thank you for your help.

[Jim M]

Would suggest disabling anything third party and getting back to the core software, whether that's third party applications/plugins, a modified theme, CloudFlare, etc... that would be the only true way to test. I can say that, I have not noticed any changes on my test instances and here on our community.