Change master password (local vault synched via Dropbox)

Hi there,
I have 1Password in versions 6.8.8 on a MacOS BigSur, on Windows 10 and 7.7.6 app on two iPhones, all sharing one local vault synched via Dropbox.
I would like to change my master password and I already read this article
If I understood correctly the process should be:
1. change master password on one device, say one of the iPhones.
2. let sync happen between all devices
3. on each other device:
3.1 first unlock attempt with the new master password will fail
3.2 second unlock attempt should succeed
Can you please confirm or advise?
Thank you

1Password Version: 6.8.8,, 7.7.6
Extension Version:
OS Version: MacOS 11.4, Windows 10, iOS 14.6
Sync Type: Dropbox


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