In T372702#10223506, @Reader_of_Information wrote:

I know this is occurring on English Wikipedia, Wikidata, Wikitonary, but I haven’t heard of any of this occurring on the other language wikis. Does anyone know of such is occurring on there?

Just a while ago, I was signed out from en-wiki 3 times consecutively within a few minutes, although I kept pages opened. First 2 times I had to re-enter my password to sign in but, the 3rd time I was centrally logged back in.

For the last 3 days, I am being signed out of en-wiki daily.

1. Last Saturday, I was signed in when I started an edit; but, when I published it I was signed out. After refreshing the page, I was centrally logged back in.
2. Sunday (yesterday) I was signed out when I opened my browser in the morning and had to enter my password again to sign in.
3. Today, I was signed in when I was typing a reply in a talk page; mid-way the preview started showing my IP instead of my signature and then had to enter my password again to sign in.

Till, last week I was only signed out once every 5-7 days for about a month, but now it's happening everyday.

Happened again today, I was logged out from all WMF sites and Central Login didn't work; had to enter the password again and login...

In T372702#10076998, @Tgr wrote:

Thanks @Vestrian24Bio! Do you remember / can check the answers to the other questions by any chance?

In T372702#10075958, @Tgr wrote:

Also:

• Is it happening on the same wiki where you logged in (ie. where you filled out a login form by entering your username and password) or only on other wikis?
• Are you sure you have set the "keep logged in" checkbox? If you don't do that, a login only lasting for 24 hours is normal. (More accurately, the login expires once you are inactive for half a day or so, but no sooner than 24 hours from login.)

More than one user have reported the issue at en-wiki now (including myself).