Malformed svg with Line Chart and empty results on ApEx 3.0

Hello everyone,
I'm experiencing problems here at our local ApEx installation:
If I add a line chart using a query that returns an empty result, for example,
SELECT 1 link, 2 label, 3 value FROM dual WHERE 1=2;
I get a malformed svg, and Firefox (2.0) does not display the chart but an error message.
I traced the error and found that the "no data found"-text to be displayed has a syntactical error:
<svg width="600" height="400" viewBox="-5 -5 600 400" preserveAspectRatio="none"> <text class="nodatafound" x="40" y="20">No data found.</text></g></svg>
The <g>-tag is closed although never opened. So the SVG-engine in Firefox behaves right by throwing an error message. However, internet explorer with the Adobe-plugins seems to ignore the tag and displays the correct svg image.
If using a different type of chart (i've tested with the vertical bars), the error does not occur, neither does it when the result is not empty. I've noticed though, that
the line chart seems to have problems if only one row is returned, it then
displays an empty graph.
Has anyone had the same kind of problem or is able to reproduce it, so I could file a bug report to Oracle?
Any help is appreciated,
Marc
PS: I use ApEx 3.0.0.00.20 on Oracle 9i

How can i debug ? Is anything helpful reported in the iAS logfiles?

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