diff --git a/src/public/app/components/note_context.js b/src/public/app/components/note_context.js
index 5bed983c7..3df6b206e 100644
--- a/src/public/app/components/note_context.js
+++ b/src/public/app/components/note_context.js
@@ -226,6 +226,10 @@ class NoteContext extends Component {
             return true;
         }
 
+        if (this.viewScope.viewMode === 'source') {
+            return true;
+        }
+
         const noteComplement = await this.getNoteComplement();
 
         const sizeLimit = this.note.type === 'text'
diff --git a/src/public/app/widgets/buttons/edit_button.js b/src/public/app/widgets/buttons/edit_button.js
index 112b3264c..a161f7540 100644
--- a/src/public/app/widgets/buttons/edit_button.js
+++ b/src/public/app/widgets/buttons/edit_button.js
@@ -5,7 +5,9 @@ import protectedSessionHolder from "../../services/protected_session_holder.js";
 
 export default class EditButton extends OnClickButtonWidget {
     isEnabled() {
-        return super.isEnabled() && this.note;
+        return super.isEnabled()
+            && this.note
+            && this.noteContext.viewScope.viewMode === 'default';
     }
 
     constructor() {
diff --git a/src/public/app/widgets/toc.js b/src/public/app/widgets/toc.js
index b4096a5df..5bdd4358c 100644
--- a/src/public/app/widgets/toc.js
+++ b/src/public/app/widgets/toc.js
@@ -69,7 +69,8 @@ export default class TocWidget extends RightPanelWidget {
     isEnabled() {
         return super.isEnabled()
             && this.note.type === 'text'
-            && !this.noteContext.viewScope.tocTemporarilyHidden;
+            && !this.noteContext.viewScope.tocTemporarilyHidden
+            && this.noteContext.viewScope.viewMode === 'default';
     }
 
     async doRenderBody() {
@@ -176,9 +177,7 @@ export default class TocWidget extends RightPanelWidget {
             const headingElement = $container.find(":header")[headingIndex];
 
             if (headingElement != null) {
-                headingElement.scrollIntoView({
-                    behavior: 'smooth'
-                });
+                headingElement.scrollIntoView({ behavior: "smooth" });
             }
         } else {
             const textEditor = await this.noteContext.getTextEditor();
@@ -263,4 +262,4 @@ class CloseTocButton extends OnClickButtonWidget {
             })
             .class("icon-action close-toc");
     }
-}
\ No newline at end of file
+}
diff --git a/src/public/app/widgets/type_widgets/canvas.js b/src/public/app/widgets/type_widgets/canvas.js
index dbe1eba2e..b4c92c4f0 100644
--- a/src/public/app/widgets/type_widgets/canvas.js
+++ b/src/public/app/widgets/type_widgets/canvas.js
@@ -12,6 +12,14 @@ const TPL = `
         .excalidraw .App-menu_top .buttonList {
             display: flex;
         }
+        
+        /* Conflict between excalidraw and bootstrap classes keeps the menu hidden */
+        /* https://github.com/zadam/trilium/issues/3780 */
+        /* https://github.com/excalidraw/excalidraw/issues/6567 */
+        .excalidraw .dropdown-menu {
+            display: block;
+        }
+
 
         .excalidraw-wrapper {
             height: 100%;
diff --git a/src/public/app/widgets/type_widgets/options/images/images.js b/src/public/app/widgets/type_widgets/options/images/images.js
index 38eae0db8..c6ceb6e04 100644
--- a/src/public/app/widgets/type_widgets/options/images/images.js
+++ b/src/public/app/widgets/type_widgets/options/images/images.js
@@ -48,7 +48,7 @@ export default class ImageOptions extends OptionsWidget {
             this.updateOption('imageMaxWidthHeight', this.$imageMaxWidthHeight.val()));
 
         this.$imageJpegQuality.on('change', () =>
-            this.updateOption('imageJpegQuality', this.$imageJpegQuality.val()));
+            this.updateOption('imageJpegQuality', this.$imageJpegQuality.val().trim() || "75"));
 
         this.$downloadImagesAutomatically = this.$widget.find(".download-images-automatically");
 
diff --git a/src/services/auth.js b/src/services/auth.js
index 331f1d252..8081cd34c 100644
--- a/src/services/auth.js
+++ b/src/services/auth.js
@@ -110,8 +110,8 @@ function checkCredentials(req, res, next) {
 
     const header = req.headers['trilium-cred'] || '';
     const auth = new Buffer.from(header, 'base64').toString();
-    const [username, password] = auth.split(/:/);
-
+    const colonIndex = auth.indexOf(':');
+    const password = colonIndex === -1 ? "" : auth.substr(colonIndex + 1);
     // username is ignored
 
     if (!passwordEncryptionService.verifyPassword(password)) {
diff --git a/src/services/image.js b/src/services/image.js
index ac9d9cfd1..1dc624e95 100644
--- a/src/services/image.js
+++ b/src/services/image.js
@@ -134,7 +134,7 @@ function saveImage(parentNoteId, uploadBuffer, originalName, shrinkImageSwitch,
 }
 
 async function shrinkImage(buffer, originalName) {
-    let jpegQuality = optionService.getOptionInt('imageJpegQuality');
+    let jpegQuality = optionService.getOptionInt('imageJpegQuality', 0);
 
     if (jpegQuality < 10 || jpegQuality > 100) {
         jpegQuality = 75;
diff --git a/src/services/options.js b/src/services/options.js
index 9d227ec4c..d2b1404fd 100644
--- a/src/services/options.js
+++ b/src/services/options.js
@@ -10,7 +10,7 @@ function getOptionOrNull(name) {
         // e.g. in initial sync becca is not loaded because DB is not initialized
         option = sql.getRow("SELECT * FROM options WHERE name = ?", name);
     }
-    
+
     return option ? option.value : null;
 }
 
@@ -27,13 +27,17 @@ function getOption(name) {
 /**
  * @returns {number}
  */
-function getOptionInt(name) {
+function getOptionInt(name, defaultValue = undefined) {
     const val = getOption(name);
 
     const intVal = parseInt(val);
 
     if (isNaN(intVal)) {
-        throw new Error(`Could not parse "${val}" into integer for option "${name}"`);
+        if (defaultValue === undefined) {
+            throw new Error(`Could not parse "${val}" into integer for option "${name}"`);
+        } else {
+            return defaultValue;
+        }
     }
 
     return intVal;