Trinidad] duplicated id in nested tables

Hi all, I'm using two nested tables with detail expansion
enabled. 
Version is 1.02, recent snapshot.
If I expand any row in the external table, I get a
duplicated id 
warning, about the "details" widget. From firebug
inspection, I noticed 
that indeed both tables got the same id, like:

<th id="_id150"
class="af_column_header-text 
OraTableBorder0001" width="1%"
nowrap="">Details</th>