This is an old bug that has come back. Reported by the customer, and recreated in the prod environment just now.
The problem is that the “new version” banner is appearing multiple times after a new deploy, which is annoying, when it should go away on the first reload…
Screen recording :
https://storage.googleapis.com/appfarm-public/64c9182ea5931c0176f57923/65db27111114377613f00bd3