On Win 10 ours randomly changes dpi. The multi-user setup is abysmal; one user can screw up another's settings. It spams notifications when you cause a quick-change-dpi event (you can turn off notifications, it's a weird default). It works very badly without the app running, ie it's a soft-mouse tailored to Windows. There's no Logitech Linux app (though the one I use is superior to the Windows app, IMO, clearer with less cruft -- https://github.com/libratbag/piper). Latest update reverted my dpi settings.
I use mine on Linux but I don't use any application for settings. I set mine under windows using the internal memory on the mouse and I've never had it change anything randomly on me besides unknowingly hitting the physical DPI button by accident
