Popping/Cracking sound after Windshield Replacement
 

Got my Windshield replaced 5 days ago, and I just noticed right now that there is like a popping/cracking sound coming from the driver side dashboard, I called the glass company that installed the windshield and told me to let the sealant cure for a week, good thing I got the lifetime warranty, im just wondering though on what is the cause of the noise, did some research and possible causes are height of the glass, also something to do with not using the spacer, did any of you guys that replaced their windshield has the same problem??