I sign into my account from home and work, with both machines running the same version of Linux and Firefox. My computer at home has never signed me out, but at work I get signed out randomly during the day at least once a week.

So with my office computer, it's been five days since I last used it. I have been reloading Lemmy for the last four hours without any trouble, but just now while I was looking through communities, it decided that I needed to log in again. And this has been the case for some time, I don't get signed out due to inactivity, but rather it always signs me out while I am actively browsing. Usually I notice this either when I try to comment on a post, or when I get back to the home page and notice a bunch of content not in my usual feed.

Hopefully someone can make some sense of this for me, including why it only happens on one desktop?