This is a really strange situation here. I was listening to Honest by San Holo while I was in the shower and I cast my Spotify audio to a Nest Audio speaker I keep on the countertop. Oddly enough, when the song hit the crunchy lyric part (at about 2:27) the lyrics were gone. I figured maybe the speaker was water damaged, so I tried the song on my Fluance Fi70 system to see if maybe this version of the song just didn't have lyrics there but to my surprise, they were there. I then tried casting the song to my many different Google Nest speakers around the house and every one of them were missing the lyrics. Not the Nest Hub Max though. It played it just fine. So I then tested some music where the audio channels were very distinguished, like Roll to Me by Del Amitri. Didn't notice any channels missing. I am at a complete loss here. It's not really that much of an issue really, but I was very intrigued by my findings.
Thanks for posting here in the Google Nest Community.
We understand your concern. There is a possibility that the feature to restrict explicit lyrics is enabled on your Nest speakers. Check the steps below on how to change it.
You can check this helpful link for more information.
Looking forward to your response.