Don't show rotation hint on "non-success"

state.lua

@@ -69,6 +69,9 @@ local function calculate_rotating_state(player, data)
     state.facedir = fix_rotatable_facedir(state.node, state.facedir)
     state.success = state.facedir and state.facedir ~= state.node.param2
 
+    -- TODO: Until we have a way to display "rotation non-success", don't show rotation hint at all.
+    if not state.success then return nil end
+
     return state
 end