Why is 5.5.3-alpha-49449 rolling out automatically?

see https://core.trac.www.ads-software.com/ticket/51679

Same here. Started about 13 minutes ago. I’ve had 7 sites update already.

Thanks – just found it on the trac and have posted reassurance on main Facebook page conversation

Please, no more “me,too” replies. It’s known and being addressed. Watch the trac ticket for details.

You can safely revert now. Go to https://example.com/wp-admin/update-core.php and click the button to reinstall WP 5.5.2.

I’m going to close these as there’s a trac ticket, and the only help we can offer has been given. Please don’t make a new post about it. Read this, nod, and follow trac if you want to hear the tech details.