Ok, I found that there is something in the `Filter´ settings that makes the detailsview not work properly.
I selected the "Users" table with UserId as primary key.
In the Filter setting I had 2 filters
[Username] LIKE '%a%' OR [Username] LIKE '%b%'
The search filter seems to work, but then clicking on any user it gives wrong details.
Using only 1 filter: [Username] LIKE '%a%' doesn't cause any problems
Is it me or is it a module bug?
thank you