Black substance on roof’s interior panel

[YuhMissed]

Hi everyone, I recently took delivery of my MYLR and noticed this black substance on the rear driver side panel, along where the roof is.

Does anyone know what it could be?

I don’t want to waste a trip to the SC just to be told it’s “within spec” or nothing to worry about. But I’m also hoping it’s not some sort of glue/sealant for the roof.

 

[cbdream99]

Looks like a poor window sitting job, Urethane.

 

[norazi]

I'm guessing excess sealant. Probably within spec.

 

[YuhMissed]

Thank you both. Sounds like this might be something they should double check just to be sure.