Sometimes it happened if I double click something, but now it's far more frequent, it started on the 14th of august. Sometimes an item will get 'caught' and stick to my cursor. I thought it was a mouse issue, but I used my trackpad as well to the same issue.
This gif shows it better.
[edit]
I'm also using Firefox.
Same here. sigh
。゚・.☆☆゚.・。゚ ☆゚.・。゚ 。゚・.☆[tp=Yuri445] ☆゚.・。゚ [egg=Yuri445] 。゚・.☆
Same for me! Firefox 91.0.1 (64 bit)