diff --git a/bin/em/variabletime/web/js/audio.js b/bin/em/variabletime/web/js/audio.js
index 03fd88d..a4a079e 100644
--- a/bin/em/variabletime/web/js/audio.js
+++ b/bin/em/variabletime/web/js/audio.js
@@ -807,7 +807,11 @@ const Audio = function(tp, record) {
                 addAudioButton(layer, propTitle, isActive);
             }
         });
-        return props.length > 1 && props[0] !== 'dummy'; 
+        const good = props.length > 1 && props[0] !== 'dummy'; 
+        if (good) {
+            this.injectedPanelAtLeastOnce = true;
+        }
+        return good;
     };
     const audioSourceCombos = {};
     const readAudioFiles = () => {
diff --git a/bin/em/variabletime/web/js/main.js b/bin/em/variabletime/web/js/main.js
index b27164c..4c31f84 100644
--- a/bin/em/variabletime/web/js/main.js
+++ b/bin/em/variabletime/web/js/main.js
@@ -330,12 +330,16 @@ const setLoadingDoneHook = () => {
         if (!addedListener) {
             const panel = tp.getPanel();
             if (panel !== null) {
-                addedListener = true;
-                const injectedAll = () => {
+                if (audio.injectedPanelAtLeastOnce) {
                     window.setLoadingDone();
-                    tp.getPanel().removeEventListener('injectedAll', injectedAll);
-                };
-                tp.getPanel().addEventListener('injectedAll', injectedAll);
+                } else {
+                    addedListener = true;
+                    const injectedAll = () => {
+                        window.setLoadingDone();
+                        tp.getPanel().removeEventListener('injectedAll', injectedAll);
+                    };
+                    tp.getPanel().addEventListener('injectedAll', injectedAll);
+                }
                 clearInterval(loadingInjectInterval);
             }
         }