Re-Add as Spigot bug has been fixed in latest build.

src/main/resources/config.yml

@@ -996,6 +996,30 @@ trails:
     loreLineTwo: "Example"
     #The text written on lore line three.
     loreLineThree: "Example"
+  FallingDust:
+    type: FALLING_DUST
+    #The location the particle effect is displayed.
+    displayLocation: 2
+    #The amount of particles displayed.
+    amount: 3
+    #The speed the particles are displayed.
+    speed: 1
+    #The distance before unrendering the particle effect.
+    range: 20
+    #The inventory slot the item is put in.
+    order: 38
+    #The items type.
+    itemType: GHAST_TEAR
+    #The items name.
+    itemName: "&6FallingDust"
+    #Whether or not the lore is enabled.
+    loreEnabled: false
+    #The text written on lore line one.
+    loreLineOne: "Example"
+    #The text written on lore line two.
+    loreLineTwo: "Example"
+    #The text written on lore line three.
+    loreLineThree: "Example"
 
 #### @ClearAll