do it like this

app.py

@@ -35,13 +35,14 @@ def filter_languages(search_text, selected_languages):
     if not filtered:
         filtered = ["No match found..."]
     else:
-        filtered = [filtered[0] + "..."] + filtered
+        filtered = [filtered[0] + "..."] + filtered[1:]
     
     return gr.update(choices=filtered), filtered[0]  # Keep dropdown open and selectable
 
 def add_language(selected_language, selected_languages):
     if not selected_language:
         return selected_languages
+    selected_language = selected_language.rstrip("...")
     selected_list = selected_languages.split(",") if selected_languages else []
     selected_list = list(set(selected_list) & set(languages.get_all_supported_languages()))
     if selected_language not in selected_list: