diff --git a/ext/bg/js/settings-popup-preview.js b/ext/bg/js/settings-popup-preview.js
index ce6da4c0..b7b3acc5 100644
--- a/ext/bg/js/settings-popup-preview.js
+++ b/ext/bg/js/settings-popup-preview.js
@@ -160,7 +160,6 @@ class SettingsPopupPreview {
         const source = new TextSourceRange(range, range.toString(), null);
         if (source === null) { return; }
 
-        this.frontend.textSourceLast = null;
         try {
             await this.frontend.searchSource(source, 'script');
         } finally {
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
index 957f57c9..1ab3c1a1 100644
--- a/ext/fg/js/frontend.js
+++ b/ext/fg/js/frontend.js
@@ -319,7 +319,10 @@ class Frontend {
             }
 
             const textSource = docRangeFromPoint(x, y, this.options);
-            if (textSource === null) {
+            if (
+                textSource === null ||
+                (this.textSourceLast !== null && this.textSourceLast.equals(textSource))
+            ) {
                 return;
             }
 
@@ -337,11 +340,9 @@ class Frontend {
         let hideResults = false;
 
         try {
-            if (!this.textSourceLast || !this.textSourceLast.equals(textSource)) {
-                this.pendingLookup = true;
-                const focus = (cause === 'mouse');
-                hideResults = !await this.searchTerms(textSource, focus) && !await this.searchKanji(textSource, focus);
-            }
+            this.pendingLookup = true;
+            const focus = (cause === 'mouse');
+            hideResults = !await this.searchTerms(textSource, focus) && !await this.searchKanji(textSource, focus);
         } catch (e) {
             if (window.yomichan_orphaned) {
                 if (textSource && this.options.scanning.modifier !== 'none') {