I have a file geodatabase with multiple feature classes and one standalone table (B0101_Schiffabstiegsanlage_A) . Some of the feature classes built a relationship class with the table. The standalone table is the origin source, a feature layer is always the destination source. An example configuration of the relationship classes is shown in the picture below.
For all feature classes and the table I activted the option "Select related records". However, related records are not selected when I select an object in the table. Furthermore, when I click on related data in the Data tab no objects are shown. Still, as you can see in the picture, if I select an object in the table itself and open the attribute pane related objects are shown.
If I create a new feature classes, a new table and new relationship classes with identical configuration for testing everything is working fine and related objects get selected.
The data I got was only imported and not created by myself.
![fehler_selection.png fehler_selection.png](https://community.esri.com/t5/image/serverpage/image-id/103422iB1BDE495A256FAD7/image-size/large?v=v2&px=999)