Sine 27th of April ebay does send broken Subjects with Umlaut "ä" and "ö":
"Gebot best??tigt. Sie sind H??chstbietender!"
But since 2nd of April myibay does send broken HTML encodings.
The Subject is correct within the body of the bid messages, but it's broken within the web listing and it's broken within the subject of the bid message.
Example: http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&item=140745669761 is saved as
"Fein Multimaster Sägeblatt 3 er Set inkl. Bi-Metall"
ä instead of ä
ü instead of ü
& instead of &