The apron sight-glass seal could be, er, 'sub-optimal' – the one on mine looked suspiciously like an offcut of hard pvc pipe, from there the oil spreads down the apron, along the bottom of the front and drips off the 'h/stock end' corner..
..satisfactorily cured substantially slowed-down with an O ring.
Wouldn't surprise me to find that your brown blob is a residual artefact from the factory rather than a current problem, if the clean oil followed it out..
..It's not Soy sauce is it? ![laugh laugh](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)