No, its not a common failure on a 92 or 96, but it does happen. I doubt Beretta USA still stocks a Factory "INOX" slide-release but in case they do, contact Brownell's and see if it's cataloged. Both the 92 and the 96 use and share the exact-same part going from memory.
Check a site-sponser here on AR15.com, CDNN out of Texas. They sell brand-new, old-stock Factory Beretta 92/96 parts for a reasonable price. You might be able to find a NP3-coated slide-release-lever for a very good price. The color will be a close-match but not exact. Your Factory "INOX" part was actually hard-chrome-plated, not stainless-steel. The NP3 finish is a lighter color of gray/silver, with less of a "blue" reflection coming of the part in strong daylight. The Beretta parts sold by CDNN are real Factory-made Beretta USA or PB of Italy parts, just New Old Stock and discontinued from Beretta USA. Good luck.