My gf's .380ez has a date of Nov. 2019 on the box. It has last live round stove pipes using both magazines (yellow springs) that came with the gun.
After 200 rounds of this nonsense I researched this forum and added an empty .380 case to the magazines between the spring and the magazine lock plate.
The .380 case made a noticable difference in the force required to push the follower down while in the upmost position.
Each magazine was then fully loaded and fired 3 times with 95 gr. Aguila FMJ.
Those 6 attempts at firing the gun were successful! Hooray, we at least have a temporary solution. 2 magazines, fully loaded 3 times each were fired without any malfunctions at all.
I ran out of time to do further testing. It's possible the magazine springs will take a set under this new pressure and the same problem with last live round stove pipes will return.
I have 200 more rounds of various factory 95 gr. FMJ ammo that I plan to shoot in about a week. I will post the outcome of that range session here on this post.
Love the .380 ez, hate that S&W has let this problem go on for so long.