As you never supplied an copyable example I can only give you a simple example
ng-model does not seem to work with selected, I can only offer a work around.
<table><tr ng-repeat="(key,row) in msg.payload.data">
<td>{{key}}</td>
<td>{{row.name}}</td>
<td>{{row.selected}}
<select ng-model="selected"
ng-change="send({payload: {table_data: msg.payload, row: key, selected: selected}})">
<option
ng-repeat="opt in row.options"
value="{{opt.value}}"
selected="{{opt.value == row.selected}}">
{{opt.name}}
</option>
</select>
</td>
</tr>
</table>
This should display the selected value before the dropdowns.
flow example
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