No OpenDocument thumbnails anywhere but in ~

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For an odf file in ~, a thumbnail is created and it also persists when I move it e.g. to ~/Documents. But there it won't be updated anymore and if i create a new file there it won't get a thumbnail at all.

I found a gsf-office.thumbnailer file in /usr/share/thumbnailers and executed the used command manually, but it failed, even though the access rights looks alright:

sf-office-thumbnailer -i ./AppData.ods -o thumb.png -s 256 calling convert '/tmp/gsf-thumbnailer-L9OF9W' +matte -thumbnail 256x256 png:'thumb.png' convert: unable to open image thumb.png': No authorization @ error/blob.c/OpenBlob/2646. convert: WriteBlob Failedthumb.png' @ error/png.c/MagickPNGErrorHandler/1804.