Push updates don’t happen to beta program versions, at some point the user would have to have installed a beta version. Even then there shouldn’t be an auto program update, program updates are notify only unless the user has changed the update to Auto.

It is a very rare case where a program update would be automatically updated - in over 11 years I have never had the program update automatically. Mind you that is usually if the user is using an old version of avast which the user wasn’t.

So how this auto update has happened is unknown to me.