I clicked the buttons on that picture too many times..

I also noticed on Liftoff. Could be a backend problem?

Unfortunately, I can't see the picture in question, but duplicate posts in the feed is ultimately something on lemmy's end. However, in the upcoming release, there has been some changes to help reduce the amount of duplicates you see!

This is the associated issue on GitHub if you want to follow along: https://github.com/hjiangsu/thunder/issues/192

I think I noticed this earlier on Connect and Jerboa

I notice this sorting by hot, I think that's the problem atm

Doesn't really bother me, when it happens I just close and come back later to new stuff to look at