There is this extremely annoying issue with my website:

https://movq.de/v/4acced3c8e/scroll.mp4

Notice how I’m scrolling, then switching to another tab, switching back, and then the scrolling position is different?

What the hell could cause this? It’s not always like this and I have only seen it in Firefox so far (but I very rarely use Chromium anyway), and this really happens a lot on my site but not on others.

Any ideas? Did I screw up the CSS somehow? 🤔

Emptied the CSS, removed the <meta name="viewport" content="width=device-width, initial-scale=1">, now it’s just plain HTML and it still happens.

Oh god … this appears to be related to the input device? Using the scrollbar is fine but using the mouse wheel is not? https://movq.de/v/66db24e1ee/vid-1787378419.mp4

FTR, also happens with Openbox on X11 and with labwc on Wayland, so this isn’t related to my custom X11 window manager.

Just saw it happen on Mastodon, so I think that scrolling is simply broken in Firefox. ☠️