--- core/rfb.js	2019-02-24 21:17:04.402944311 +0800
+++ core/rfb.js	2019-02-24 21:17:34.782484107 +0800
@@ -1256,8 +1256,8 @@
         encs.push(encodings.encodingCopyRect);
         // Only supported with full depth support
         if (this._fb_depth == 24) {
-            encs.push(encodings.encodingTight);
-            encs.push(encodings.encodingTightPNG);
+            // encs.push(encodings.encodingTight);
+            // encs.push(encodings.encodingTightPNG);
             encs.push(encodings.encodingHextile);
             encs.push(encodings.encodingRRE);
         }