[lotoole3]

Same thing here, smudeges at top and bottom of travel, both sides, and after a while the wipers started chattering too...

However, I think it's more of the wipers breaking in, maybe some residue left on them after the production process?

After about four or five solid rainstorms it seems to have subsided... you also might want to try wiping the blades down with some soapy water...