I recently used a Spacemouse on Windows 11 in Eve with no issues (controls worked as expected).
However, when using it on MacOS, the functionality is much more limited/non-existent. The Spacemouse clearly works outside of Eve. All drivers are up to date. And it can partially work in Eve since the side buttons do bring up radial menus, but the actual joystick does nothing.
I’ve attempted to attach the Eve Online app (in this case the launcher is the only one available) to the 3DConnexion software which didn’t do anything. I’m not sure if there’s a way to connect it to the running Eve process.
I’m not sure what in the WIndows installation is allowing the Spacemouse to work that isn’t available on MacOS.