This should fix last issue

Author: SvenjaReißaus

classes/artifacts/Factions_jar/Factions.jar

@@ -752,13 +752,15 @@ public void onPlayerInteract(PlayerInteractEvent event) {
 
 		if (block == null) return;  // clicked in air, apparently
 		SavageFactions.plugin.log("Checking for material permission");
-		if (GetPermissionFromUsableBlock(event.getClickedBlock().getType()) == null) return;
-		SavageFactions.plugin.log("Checking for use block permission");
-		if (!canPlayerUseBlock(player, block, false)) {
-			event.setCancelled(true);
-			event.setUseInteractedBlock(Event.Result.DENY);
-			return;
+		if (GetPermissionFromUsableBlock(event.getClickedBlock().getType()) != null) {
+			SavageFactions.plugin.log("Checking for use block permission");
+			if (!canPlayerUseBlock(player, block, false)) {
+				event.setCancelled(true);
+				event.setUseInteractedBlock(Event.Result.DENY);
+				return;
+			}
 		}
+		if (event.getMaterial().isSolid()) return;
 		SavageFactions.plugin.log("Checking if you can use that item");
 		if (!playerCanUseItemHere(player, block.getLocation(), event.getMaterial(), false)) {
 			event.setCancelled(true);