The Knuckles controllers for the Index are not being detected as Knuckles - they look like the Oculus Rift S controllers and are angled about 90 degrees off, and in the middle of the sticks. SteamVR and other games work fine, Paradiddle worked fine two days ago, no changes made to it or SteamVR.
edit: This happens when Paradiddle is launched through SteamVR. When launched from a desktop icon or the Steam library, it works as expected.