diff --git a/src/main.js b/src/main.js
index edafc5a0d..a7e9ac81e 100644
--- a/src/main.js
+++ b/src/main.js
@@ -231,6 +231,9 @@ async function onDeviceReady() {
 			// load plugins
 			try {
 				await loadPlugins();
+				// Ensure at least one sidebar app is active after all plugins are loaded
+				// This handles cases where the stored section was from an uninstalled plugin
+				sidebarApps.ensureActiveApp();
 
 				// Re-emit events for active file after plugins are loaded
 				const { activeFile } = editorManager;
diff --git a/src/sidebarApps/index.js b/src/sidebarApps/index.js
index 3cead9b7a..c08636c84 100644
--- a/src/sidebarApps/index.js
+++ b/src/sidebarApps/index.js
@@ -48,11 +48,14 @@ function add(
 function remove(id) {
 	const app = apps.find((app) => app.id === id);
 	if (!app) return;
+	const wasActive = app.active;
 	app.remove();
 	apps.splice(apps.indexOf(app), 1);
-	if (app.active) {
+	if (wasActive && apps.length > 0) {
 		const firstApp = apps[0];
 		firstApp.active = true;
+		currentSection = firstApp.id;
+		localStorage.setItem(SIDEBAR_APPS_LAST_SECTION, firstApp.id);
 	}
 }
 
@@ -78,6 +81,22 @@ async function loadApps() {
 	$apps.append(<span className="icon favorite" onclick={Sponsors} />);
 }
 
+/**
+ * Ensures that at least one app is active.
+ * Call this AFTER all plugins have been loaded to handle cases where
+ * the stored section was from an uninstalled plugin.
+ * @returns {void}
+ */
+function ensureActiveApp() {
+	const hasActiveApp = apps.some((app) => app.active);
+	if (!hasActiveApp && apps.length > 0) {
+		const firstApp = apps[0];
+		firstApp.active = true;
+		currentSection = firstApp.id;
+		localStorage.setItem(SIDEBAR_APPS_LAST_SECTION, firstApp.id);
+	}
+}
+
 /**
  * Gets the container of the app with the given ID.
  * @param {string} id
@@ -101,8 +120,8 @@ function onclick(e) {
 	localStorage.setItem(SIDEBAR_APPS_LAST_SECTION, id);
 	const activeApp = apps.find((app) => app.active);
 	const app = apps.find((app) => app.id === id);
-	activeApp.active = false;
-	app.active = true;
+	if (activeApp) activeApp.active = false;
+	if (app) app.active = true;
 }
 
 export default {
@@ -111,4 +130,5 @@ export default {
 	get,
 	remove,
 	loadApps,
+	ensureActiveApp,
 };
diff --git a/src/sidebarApps/sidebarApp.js b/src/sidebarApps/sidebarApp.js
index 95409f0e6..df147dcdd 100644
--- a/src/sidebarApps/sidebarApp.js
+++ b/src/sidebarApps/sidebarApp.js
@@ -89,8 +89,29 @@ export default class SidebarApp {
 		this.#active = !!value;
 		this.#icon.classList.toggle("active", this.#active);
 		if (this.#active) {
-			const child = getContainer(this.#container);
-			$sidebar.replaceChild($contaienr, child);
+			const oldContainer = getContainer(this.#container);
+			// Try to replace the old container, or append if it's not in the DOM
+			try {
+				if (oldContainer && oldContainer.parentNode === $sidebar) {
+					$sidebar.replaceChild($contaienr, oldContainer);
+				} else {
+					// Old container not in sidebar, just append the new one
+					const existingContainer = $sidebar.get(".container");
+					if (existingContainer) {
+						$sidebar.replaceChild($contaienr, existingContainer);
+					} else {
+						$sidebar.appendChild($contaienr);
+					}
+				}
+			} catch (error) {
+				// Fallback: append the new container
+				console.warn("Error switching sidebar container:", error);
+				const existingContainer = $sidebar.get(".container");
+				if (existingContainer) {
+					existingContainer.remove();
+				}
+				$sidebar.appendChild($contaienr);
+			}
 			this.#onselect(this.#container);
 		}
 	}
@@ -111,10 +132,14 @@ export default class SidebarApp {
 	}
 
 	remove() {
-		this.#icon.remove();
-		this.#container.remove();
-		this.#icon = null;
-		this.#container = null;
+		if (this.#icon) {
+			this.#icon.remove();
+			this.#icon = null;
+		}
+		if (this.#container) {
+			this.#container.remove();
+			this.#container = null;
+		}
 	}
 }