diff --git a/AIStudyApp/AIStudyApp/Features/Library/LibrarySubpages.swift b/AIStudyApp/AIStudyApp/Features/Library/LibrarySubpages.swift
index 54cc59b..ae80d7c 100644
--- a/AIStudyApp/AIStudyApp/Features/Library/LibrarySubpages.swift
+++ b/AIStudyApp/AIStudyApp/Features/Library/LibrarySubpages.swift
@@ -144,13 +144,15 @@ struct LibraryDetailPage: View {
     @State private var detailTab = 1
 
     private func appear() async {
+        // Load KB info and sources
+        viewModel.knowledgeBase = try? await KnowledgeBaseService.shared.detail(id: knowledgeBaseId)
         await loadSources()
     }
     @State private var sortOption = 0
     @State private var showFolderManager = false
     @State private var sources: [KnowledgeSource] = []
     @State private var sourceReadingStatus: [String: String] = [:]
-    @State private var isLoadingSources = false
+    @State private var isLoadingSources = true
 
     private var allSelected: Bool {
         !viewModel.items.isEmpty && selectedIds.count == viewModel.items.count