Wow, what a long title!
What happened is that I have a few dashboards for people that include various embedded Google Calendar widgets in <iframe>
s.
These won’t show on fresh installs of Google Chrome that have the particular user signed on in the Chrome Settings so that settings will be synchronised, right?
Right?!
Wrong!!
Not all Chrome settings will be synchronised by Chrome. Things like [Wayback/Archive] “On startup” (with the pages shown after Chrome startup) and wich installed extensions are synchronised including the visibility of their icons. But the settings of the extensions themselves will not.
This means that odd things happen, for instance extensions like [Wayback/Archive] Privacy Badger and [Wayback/Archive] uBlock Origin being installed, but both reverting to their default settings.
That in turn leads to hard to see problems, in this case the embedded Google Calendar <iframe>
s failing.