diff --git a/ext/bg/js/settings/popup-preview-frame.js b/ext/bg/js/settings/popup-preview-frame.js
index 2b727cbd..54f246e3 100644
--- a/ext/bg/js/settings/popup-preview-frame.js
+++ b/ext/bg/js/settings/popup-preview-frame.js
@@ -35,7 +35,6 @@ class SettingsPopupPreview {
 
     async prepare() {
         // Setup events
-        window.addEventListener('resize', (e) => this.onWindowResize(e), false);
         window.addEventListener('message', (e) => this.onMessage(e), false);
 
         const themeDarkCheckbox = document.querySelector('#theme-dark-checkbox');
@@ -96,16 +95,6 @@ class SettingsPopupPreview {
         return result;
     }
 
-    onWindowResize() {
-        if (this.frontend === null) { return; }
-        const textSource = this.textSource;
-        if (textSource === null) { return; }
-
-        const elementRect = textSource.getRect();
-        const writingMode = textSource.getWritingMode();
-        this.frontend.popup.showContent(elementRect, writingMode);
-    }
-
     onMessage(e) {
         const {action, params} = e.data;
         const handler = SettingsPopupPreview._messageHandlers.get(action);
@@ -163,6 +152,7 @@ class SettingsPopupPreview {
 
         try {
             await this.frontend.onSearchSource(source, 'script');
+            this.frontend.setCurrentTextSource(source);
         } finally {
             source.cleanup();
         }
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
index 2543b52c..85f1f373 100644
--- a/ext/fg/js/frontend.js
+++ b/ext/fg/js/frontend.js
@@ -42,6 +42,8 @@ class Frontend extends TextScanner {
         try {
             await this.updateOptions();
 
+            window.addEventListener('resize', this.onResize.bind(this), false);
+
             yomichan.on('orphaned', () => this.onOrphaned());
             yomichan.on('optionsUpdate', () => this.updateOptions());
             chrome.runtime.onMessage.addListener(this.onRuntimeMessage.bind(this));
@@ -51,7 +53,7 @@ class Frontend extends TextScanner {
     }
 
     async onResize() {
-        const textSource = this.textSourceCurrent;
+        const textSource = this.getCurrentTextSource();
         if (textSource !== null && await this.popup.isVisible()) {
             this._showPopupContent(textSource);
         }
@@ -81,8 +83,7 @@ class Frontend extends TextScanner {
     getMouseEventListeners() {
         return [
             ...super.getMouseEventListeners(),
-            [window, 'message', this.onWindowMessage.bind(this)],
-            [window, 'resize', this.onResize.bind(this)]
+            [window, 'message', this.onWindowMessage.bind(this)]
         ];
     }