Alfresco Explorer assigns incorrect mimetype for rss xml files.

In Alfresco Explorer, if you upload an rss xml file, it assigns incorrect mimetype (first one in the list) to the file. See attached screenshot.

Steps to Reproduce:
1) In Alfresco Explorer, create a space
2) Within the space created above, click 'Add Content'
3) Click 'Browse' button and select the attached podcast.xml file (e.g. rss xml file).
4) Check the content type assigned to the file.

Actual Result:
'3G Video' content type has been auto assigned to the podcast.xml file. (see screenshot)

Expected Result:
'xml' content type should be auto assigned to the podcast.xml file.

Note: The issue is not reproducible in Share. (e.g. correct mimetype (e.g. xml) is assigned in Share)