It may be the case that variance is so wide that there are some P320's which are in that "depressed to the wall" state at rest, but that would require an x-ray or CAT scan of the offending guns, and I don't know if anyone other than Sig has one. There is also a safety on P320's that should be stopping this from happening, but again, it is a part with very wide variation, and on some guns it seems it doesn't work (Sig issued a recall over this already).
I agree with Jared that this problem is a lot trickier and weirder than people give it credit for. The sort of core of the issue is that everything about the gun was done cheaply and they flew a little too close to the sun, but I believe they have no idea what in particular they cheaped out on too much.
Sig's "recall" was a drop-safety issue, where in certain orientations the weight of the trigger could generate enough momentum to allow an unintentional discharge.
The P320 was popular as it was designed as a modular system, allowing a single FCU (firing control unit, basically a trigger and striker assembly) to be independent and swappable with other parts of the handgun: grip, slide, barrel, etc. This allows for a single platform to serve multiple needs: concealed carry, compact, full-size, or even competition models, as well as be transferrable across calibers. The magazine design also allowed for more rounds to be carried in compact configurations.
The P320 was selected by the US Army [0] as the official replacement for the Beretta M9 as a service-issued sidearm, officially designated the M17 or M18 (in 9mm).
In 2020 SIG SAUER initiated a "voluntary upgrade program" [1] that swapped various components of the trigger to prevent unintended discharge (UD) events that could occur when the pistol dropped in certain orientations. These changes became standard for the M17 and all P320 manufactured after.
Recently, there have been very high-profile cases and investigations around UD events, the most recent being by an event in the Air Force that led to the death of an airman. In that case the Air Force put a suspension on the firearm during the investigation but eventually arrested the airman responsible, as they determined he had lied about the events [2].
Regardless of the specific failure modes of the weapon, there is a stigma around it, resulting in various law enforcement agencies switching from it or ranges banning the firearm. This has been popularized by incidents caught on video and somewhat viral videos of testing the firearm in a variety of scenarios.
All in all, the P320 is one of the most mass-produced firearms in the world, and I would not be surprised to see Sig Sauer continue to fight in the court of public opinion to defend the reputation of the firearm, in what I would deem a losing strategy.
[0] - https://en.wikipedia.org/wiki/SIG_Sauer_M17
[1] - https://www.sigsauer.com/p320-voluntary-upgrade-program
[2] - https://www.airforcetimes.com/news/your-air-force/2025/08/08...