5.2.1 invalid GPX written (scientific notation in a decimal element)

I've made many GPX files of my tracks using OruxMaps, and this is the first time I've seen this. I did a long car drive (~200 miles) and made a GPS track of the whole thing for fun. I output a GPX file which was huge, something like 6000 points. I loaded the GPX file into my own desktop app I'm developing that allows various manipulations of GPX files. My app also checks if the file is valid, and I found that it wasn't because one of the trackpoints had the following elevation:

Code:

<trkpt lat="38.20173143" lon="-121.06816714">
<ele>-3.1337852E-4</ele>

I had to double check, but apparently scientific notation is not allowed in the decimal element.

http://books.xmlschemata.org/relaxng/ch19-77057.html

It's not a big deal at all, and does not bother me, but I figured I'd be a good citizen and report the bug for once.