I've noticed that occasionally, a site will show up twice in the history dropdown. It's not always a thing that happens, but it does happen. Clearing history obviously wipes this out, but I'm not sure why it's happening in the first place. I'm not talking multiple pages sharing a listing or anything. It's literally instances where certain sites will just show up twice in the history. I've noticed it seems to happen a lot when I open a video in Youtube in a spare tab rather than just clicking on a video on the main page. I'm on version 142.0.1 of Firefox, and just updated to it two days or so ago. I'm on Windows 10 version 1909. Anyone know what's causing this? Edit: I'm including an image of the glitch. This happened just after I clicked on a video. I did not hit reload or anything, and the video simply appears in the history twice. It occasionally happens with other sites, too.