I'm also interested in
@wellington to expand on this, *BUT*...I know for a fact (personal knowledge, as I witnessed it) that it happens every day and twice on Sundays.
In theory, you are correct, but in practice, things are quite different.
Lawyers have always trumpeted this:
Lawyers as Officers of the Court.
and the reality synchronizes with their boasting:
Australian defence lawyer named as police informant.
In the US, it is rampant. I have personal experience here. There are several cases on Lexis Nexis and Westlaw where one can read that lawyers surreptitiously record their clients, i.e. the defendants.
Rule 3.7 Lawyer As Witness - Comment
and here:
When Lawyers Testify Against a Client
In Europe, I can only go by what my retired neighbor and former judge told me in the 70s when I was a kid. I have NO experience with this. So, I won't opine.
In Japan, they have this:
Japan FTC Proposes New Attorney-Client Privilege Rules for Public Comment
In Latin America?
Let your imagination run wild
Should we even discuss China? I hope not