I have a feature class with nested related records like so: FeatureClass-->Table1-->Table2. If I click on a feature and select 'show related records' I'll get an attribute table tab with results from Table1. If I then select a record from that Table 1 tab and try to show related records the option is always disabled (greyed out). If I open attributes for Table1 via the layer list however this will work correctly for the same record (ie. I can select that record in the tab and then choose 'show related records' and get a tab for Table2 with any records related to the selected item in Table1).
This seems to definitely be a bug. Any ideas on how to get around this or get it fixed?