So this happened to me a few times and I'm not quite sure if it's a big deal or not. You buy a new soap and when you get it there's a hairline crack in the lid. Not sure if having air exposure can dry a soap out or mess with it. I have 20+ soaps so it will take awhile to use all the soap up so I think of longevity.
Debating if it's worth sending back and getting a new or if this makes zero difference. Below is a pic, barrister and mann Seville