That popping is most likely the mount binding. There is something awry with the installation of the strut mount. It won't do major damage, no. It may not damage anything in the short term. Make sure the shaft nut is tight, the mount nuts are tight and listen for a worsening condition while on your drive. Get it checked as soon as possible though to lessen the chance of increasing your cost for a repair. Removal of the strut will be required to correct the problem.
