OmniXML XPath finds only first node in some situations

[StoneEngineer]

I encountered an issue with XPath.
Here is XML structure I tested:

  <record>
    <column name="name">testing_field1</column>
    <column name="table">testing</column>
    <column name="type">int(11)</column>
    <column name="upload">Y</column>
    <column name="description"/>
  </record>

This expression works:
/data/record[column='testing_field1']/column[.='testing']
and returns
<column name="table">testing</column>

This expression
/data/record[column='testing']/column[.='testing_field1']
does not work. Second node (column='testing') is not found.

I tested both expressions with online xpath evaluators and both work