I'm using an UploadedFile object in my web app, and all works fine. However, when I try to upload a file, with a filename containing non-ascii chars (e.g. Spanish), I see that the getBytes method returns an empty byte array, the filename is not stored correctly (the non-ascii chars are lost, replaced by another representation), and that the content-type is application/octet-stream instead of image/png as supposed to be.
If I rename that same file to have only ascii chars - everything is back to normal.
How can I upload files with non-ascii chars in their name?