On local development environments, everything seems fine. But those don't have any network latency.
On slower computers, slower browsers (think lots of extensions), or slower webservers (think xdebug enabled), this may also be visible.
As latency increases (as well as JS execution speed decreases), the problem becomes more pronounced. See the attached screencast → , which demonstrates the absence of the problem at zero/very low latency, the presence of it at some latency, and the prominence at very high latency.
TBD
Not all content is available!
It's likely this issue predates Contrib.social: some issue and comment data are missing.
@Wim leers wonder if this is still an issue in D10? Not entirely sure how to test out
Going to close out, but if still experiencing we can always re-open.