diff --git a/crates/app/src/public/js/atto.js b/crates/app/src/public/js/atto.js
index 480713f..93e4bea 100644
--- a/crates/app/src/public/js/atto.js
+++ b/crates/app/src/public/js/atto.js
@@ -878,7 +878,7 @@ media_theme_pref();
 })();
 
 // ui ns
-(() => {
+(async () => {
     const self = reg_ns("ui");
     window.SETTING_SET_FUNCTIONS = [];
 
@@ -1151,6 +1151,12 @@ ${option.input_element_type === "textarea" ? `${option.value}</textarea>` : ""}
     });
 
     // intersection observer infinite scrolling
+    const obs = (await ns("ui")).IO_DATA_OBSERVER;
+    if (obs) {
+        console.log("get lost old observer");
+        obs.disconnect();
+    }
+
     self.IO_DATA_OBSERVER = new IntersectionObserver(
         async (entries) => {
             for (const entry of entries) {