This has started occurring fairly recently, on both my forum (latest as of yesterday morning) and on the Meta forum.
Description: When I log in on one device, I’m logged out on the others - this hasn’t been the case the majority of the time I’ve used Discourse, so I’m making the assumption this is unintentional.
Environments: I have three machines I regularly visit Discourse forums on - one desktop, one laptop, one chromebook, so always desktop version (on the offchance that matters). Running Win10, Win7, and ChromeOS, always using Chrome and logged in through a Google account on each.
As mentioned before, this happens on the Meta forum as well as the forum I run. It doesn’t appear to matter which device I log into, it always logs me out on both of the others.
I don’t know what other information I can provide to be useful here, so let me know if anything else is needed.