Bugs?
The expression context for the XPath query functionality does not define the default namespace. Therefore, there is no way to search for elements in most documents, i.e. documents that have a non-empty default namespace. How did they miss that one?
The query v.1 button keeps getting reselected when I type text into the query box even after I have explicitly chosen v.2. I have to type first, then select v.2.
XPath2 querying is sketchy. There is no mention of it in the documentation. The expression "for $x in (1, 2, 3) return $x" generates a warning dialog box with no text in it. "(1, 2, 3)" works.