Exodus Reader + XML Writer create multiblock root associated FieldData

Using the Exodus Reader then saving the data as a .vtm file create a multiblock root associated FieldData with strange effect in ParaView.

Note the information tab and color widget containing "partial" field data, which are not partial.

The resulting field data is visible in the .vtm file

<VTKFile type="vtkMultiBlockDataSet" version="1.0" byte_order="LittleEndian" header_type="UInt64">
  <vtkMultiBlockDataSet>
    <Block index="0" name="Element Blocks">
      <DataSet index="0" name="Unnamed block ID: 1 Type: HEX" file="testCan/testCan_0_0.vtu"/>
      <DataSet index="1" name="Unnamed block ID: 2 Type: HEX" file="testCan/testCan_1_0.vtu"/>
    </Block>
    <Block index="4" name="Side Sets">
      <DataSet index="0" name="Unnamed set ID: 4"/>
    </Block>
    <Block index="7" name="Node Sets">
      <DataSet index="0" name="Unnamed set ID: 1"/>
      <DataSet index="1" name="Unnamed set ID: 100"/>
    </Block>
  </vtkMultiBlockDataSet>
  <FieldData>
    <DataArray type="Float64" Name="TimeValue" NumberOfTuples="1" format="binary" RangeMin="0" RangeMax="0">
      CAAAAAAAAAAAAAAAAAAAAA==
    </DataArray>
  </FieldData>
</VTKFile>

This TimeValue array can be chosen in the ColorWidget but it has no effect.

How to reproduce :

• Open ParaView
• Open can.ex2, Apply
• Save data as a .vtm file
• Open .vtm file, Apply