3D support is still in the testing stage. Assuming that you have updated to the latest OSMC update (with Kodi 18.7) you would need to downgrade Kodi to 18.6 until 3D support is readded to the latest version.
3D support is still in the testing stage. Assuming that you have updated to the latest OSMC update (with Kodi 18.7) you would need to downgrade Kodi to 18.6 until 3D support is readded to the latest version.