WordPress’ Core systems team had an eventful Friday when an error in the auto-update system caused sites to update to WordPress 5.5.3-alpha-49449, including live production sites with no auto-update constants defined.
I just had a random production site auto-update itself to #WordPress 5.5.3-alpha 😨 Anyone else seeing this?
— Mark Root-Wiley (@MRWweb) October 30, 2020
Those who received an email about the update logged into their sites to see the message: “BETA TESTERS: This site is set up to install updates of future beta versions automatically.”
Shaun Rieman logged the first ticket about sites being updated to 5.5.3-alpha-49449,