diff --git a/chrome/content/zotero/contextPane.js b/chrome/content/zotero/contextPane.js
index 449ab3572e..21ca80c7e5 100644
--- a/chrome/content/zotero/contextPane.js
+++ b/chrome/content/zotero/contextPane.js
@@ -238,7 +238,10 @@ var ZoteroContextPane = new function () {
 		var reader = Zotero.Reader.getByTabID(Zotero_Tabs.selectedID);
 		if (reader) {
 			var editor = _getActiveEditor();
-			reader.enableAddToNote(!!editor);
+			var libraryReadOnly = editor && editor.item && !_isLibraryEditable(editor.item.libraryID);
+			var noteReadOnly = editor && editor.item
+				&& (editor.item.deleted || editor.item.parentItem && editor.item.parentItem.deleted);
+			reader.enableAddToNote(!!editor && !libraryReadOnly && !noteReadOnly);
 		}
 	}
 	
diff --git a/chrome/content/zotero/xpcom/reader.js b/chrome/content/zotero/xpcom/reader.js
index 731049122d..c677821710 100644
--- a/chrome/content/zotero/xpcom/reader.js
+++ b/chrome/content/zotero/xpcom/reader.js
@@ -72,6 +72,7 @@ class ReaderInstance {
 			state,
 			location,
 			promptImport: false,
+			readOnly: this._isReadOnly(),
 			showItemPaneToggle: this._showItemPaneToggle,
 			sidebarWidth: this._sidebarWidth,
 			sidebarOpen: this._sidebarOpen,
@@ -254,6 +255,21 @@ class ReaderInstance {
 		return null;
 	}
 
+	_isReadOnly() {
+		let item = Zotero.Items.get(this._itemID);
+		if (item.deleted || item.parentItem && item.parentItem.deleted) {
+			return true;
+		}
+		let { libraryID } = item;
+		var type = Zotero.Libraries.get(libraryID).libraryType;
+		if (type === 'group') {
+			var groupID = Zotero.Groups.getGroupIDFromLibraryID(libraryID);
+			var group = Zotero.Groups.get(groupID);
+			return !group.editable;
+		}
+		return false;
+	}
+
 	_dataURLtoBlob(dataurl) {
 		let parts = dataurl.split(',');
 		let mime = parts[0].match(/:(.*?);/)[1];
@@ -876,7 +892,10 @@ class Reader {
 				// Ignore other notifications if the attachment no longer exists
 				let item = Zotero.Items.get(reader._itemID);
 				if (item) {
-					if (event === 'delete') {
+					if (event === 'trash' && (ids.includes(item.id) || ids.includes(item.parentItemID))) {
+						reader.close();
+					}
+					else if (event === 'delete') {
 						let disappearedIDs = reader.annotationItemIDs.filter(x => ids.includes(x));
 						if (disappearedIDs.length) {
 							let keys = disappearedIDs.map(id => extraData[id].key);
diff --git a/pdf-reader b/pdf-reader
index abf50dfce6..65bb0ea542 160000
--- a/pdf-reader
+++ b/pdf-reader
@@ -1 +1 @@
-Subproject commit abf50dfce6450f3d1776da872934077be653fca7
+Subproject commit 65bb0ea542694d8a88a6c1aacb8488274ad96c03