From 84a55968ee2c5e0c886458b1c51565123d33e4ed Mon Sep 17 00:00:00 2001
From: Tom <tmpearce@gmail.com>
Date: Wed, 31 Jan 2024 15:40:47 -0500
Subject: [PATCH] Allow preloading of tiles for zero opacity tiled images

---
 src/tiledimage.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tiledimage.js b/src/tiledimage.js
index cb7dd778..9b202819 100644
--- a/src/tiledimage.js
+++ b/src/tiledimage.js
@@ -1434,7 +1434,7 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
         let lowestLevel = tiles.length ? tiles[0].level : 0;
 
         let drawArea = this.getDrawArea();
-        if(!drawArea || this._opacity === 0){
+        if(!drawArea || (this._opacity === 0 && !this._preload)){
             return;
         }