@swetharajshree, Yes, it does. I don't think closed systems have that issue.
@aengs2, also does it have the problem of condensation ?
I had a Medela with my son. It was decent. I didn't like that it was an open system and I didn't feel like it fully emptied my breasts. I'm trying the Spectra this time around because it's a closed system and I've heard great things about it.
I’ve been watching reviews on YouTube, and I’m going to get the Spectra S1. I like your not stuck to the cord, and the battery lasts 3 hours.