SpaceMouse not working in Adobe Reader DC
SpaceMouse input in Adobe Reader DC might be blocked by a security feature in Adobe Reader DC when “Run in AppContainer” is enabled under
Edit > Preferences > Security (Enhanced) > Sandbox protections
You can find more information on that setting on the Adobe website:
https://www.adobe.com/devnet-docs/acrobatetk/tools/AppSec/sandboxprotections.html