diff --git a/CHANGELOG.md b/CHANGELOG.md
index f8b7a48a..f1986bd1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Change Log
 
+## [4.0.1] - 2021-09-24
+
+- [#114](https://github.com/estruyf/vscode-front-matter/issues/114): Fix for categories/tags provided as string in YAML
+- [#115](https://github.com/estruyf/vscode-front-matter/issues/115): Fix for updating added categories/tags
+- [#116](https://github.com/estruyf/vscode-front-matter/issues/116): Fix for not showing the `-1` limit on inputs
+
 ## [4.0.0] - 2021-09-22 - [Release Notes](https://beta.frontmatter.codes/updates/v4_0_0)
 
 - [#101](https://github.com/estruyf/vscode-front-matter/issues/101): Date picker available on the metadata section
diff --git a/src/explorerView/ExplorerView.ts b/src/explorerView/ExplorerView.ts
index 30ecfa11..3f2a4ab3 100644
--- a/src/explorerView/ExplorerView.ts
+++ b/src/explorerView/ExplorerView.ts
@@ -433,7 +433,9 @@ export class ExplorerView implements WebviewViewProvider, Disposable {
     }
 
     const article = ArticleHelper.getFrontMatter(editor);
-    this.pushMetadata(article!.data);
+    if (article?.data) {
+      this.pushMetadata(article!.data);
+    }
   }
 
   /**
diff --git a/src/helpers/Extension.ts b/src/helpers/Extension.ts
index 2f5f0e93..6a5ef072 100644
--- a/src/helpers/Extension.ts
+++ b/src/helpers/Extension.ts
@@ -1,7 +1,7 @@
 import { basename } from "path";
-import { extensions, Uri, ExtensionContext } from "vscode";
+import { extensions, Uri, ExtensionContext, window, workspace, commands } from "vscode";
 import { Folders, WORKSPACE_PLACEHOLDER } from "../commands/Folders";
-import { SETTINGS_CONTENT_FOLDERS, SETTINGS_CONTENT_PAGE_FOLDERS, SETTING_DATE_FIELD, SETTING_MODIFIED_FIELD, SETTING_SEO_DESCRIPTION_FIELD, SETTING_TAXONOMY_CONTENT_TYPES } from "../constants";
+import { EXTENSION_NAME, GITHUB_LINK, SETTINGS_CONTENT_FOLDERS, SETTINGS_CONTENT_PAGE_FOLDERS, SETTING_DATE_FIELD, SETTING_MODIFIED_FIELD, SETTING_SEO_DESCRIPTION_FIELD, SETTING_TAXONOMY_CONTENT_TYPES } from "../constants";
 import { DEFAULT_CONTENT_TYPE_NAME } from "../constants/ContentType";
 import { EXTENSION_BETA_ID, EXTENSION_ID, EXTENSION_STATE_VERSION } from "../constants/Extension";
 import { ContentType } from "../models";
@@ -39,7 +39,32 @@ export class Extension {
     }
 
     if (usedVersion !== installedVersion) {
-      Notifications.info(`Find out what is new at [v${installedVersion} release notes](https://${this.isBetaVersion() ? 'beta.' : ''}frontmatter.codes/updates)`);
+      const whatIsNewTitle = `Check the changelog`;
+      const githubTitle = `Give it a ⭐️`;
+
+      const whatIsNew = {
+        title: whatIsNewTitle,
+        run: () => {
+          const uri = Uri.file(`${Extension.getInstance().extensionPath.fsPath}/CHANGELOG.md`);
+          workspace.openTextDocument(uri).then((() => {
+            commands.executeCommand("markdown.showPreview", uri)
+          }));
+        }
+      };
+
+      const starGitHub = {
+        title: githubTitle,
+        run: () => {
+          commands.executeCommand('vscode.open', Uri.parse(GITHUB_LINK));
+        }
+      };
+
+      window.showInformationMessage(`${EXTENSION_NAME} has been updated to v${installedVersion} — check out what's new!`, starGitHub, whatIsNew).then((selection => {
+        if (selection?.title === whatIsNewTitle || selection?.title === githubTitle) {
+          selection.run();
+        }
+      }));
+
       this.setVersion(installedVersion);
     }
 
diff --git a/src/helpers/SettingsHelper.ts b/src/helpers/SettingsHelper.ts
index 2c328535..cdabfc6b 100644
--- a/src/helpers/SettingsHelper.ts
+++ b/src/helpers/SettingsHelper.ts
@@ -5,7 +5,7 @@ import { TaxonomyType } from '../models';
 import { SETTING_TAXONOMY_TAGS, SETTING_TAXONOMY_CATEGORIES, CONFIG_KEY } from '../constants';
 import { Folders } from '../commands/Folders';
 import { join, basename } from 'path';
-import { existsSync, readFileSync, writeFileSync } from 'fs';
+import { existsSync, readFileSync, watch, writeFileSync } from 'fs';
 import { Extension } from './Extension';
 
 export class Settings {
@@ -38,12 +38,22 @@ export class Settings {
    * @param callback 
    */
   public static onConfigChange(callback: (global?: any) => void) {
+    const projectConfig = Settings.projectConfigPath;
+
     workspace.onDidChangeConfiguration(() => {
       callback();
     });
 
+    // Background listener for when it is not a user interaction
+    if (projectConfig && existsSync(projectConfig)) {
+      watch(projectConfig, () => {
+        callback();
+      });
+    }
+
     workspace.onDidSaveTextDocument(async (e) => {
       const filename = e.uri.fsPath;
+
       if (Settings.checkProjectConfig(filename)) {
         const file = await workspace.openTextDocument(e.uri);
         if (file) {
diff --git a/src/panelWebView/components/Fields/TextField.tsx b/src/panelWebView/components/Fields/TextField.tsx
index 8339e301..5a1ea116 100644
--- a/src/panelWebView/components/Fields/TextField.tsx
+++ b/src/panelWebView/components/Fields/TextField.tsx
@@ -26,7 +26,7 @@ export const TextField: React.FunctionComponent<ITextFieldProps> = ({limit, labe
 
   let isValid = true;
   if (limit && limit !== -1) {
-    isValid = ((text || "").length < limit);
+    isValid = ((text || "").length <= limit);
   }
 
   return (
@@ -46,7 +46,7 @@ export const TextField: React.FunctionComponent<ITextFieldProps> = ({limit, labe
       }} />
 
       {
-        limit && (text || "").length >= limit && (
+        limit && limit > 0 && (text || "").length > limit && (
           <div className={`metadata_field__limit`}>
             Field limit reached {(text || "").length}/{limit}
           </div>
diff --git a/src/panelWebView/components/TagPicker.tsx b/src/panelWebView/components/TagPicker.tsx
index 877515e5..2afdba20 100644
--- a/src/panelWebView/components/TagPicker.tsx
+++ b/src/panelWebView/components/TagPicker.tsx
@@ -123,7 +123,7 @@ export const TagPicker: React.FunctionComponent<ITagPickerProps> = (props: React
   
   React.useEffect(() => {
     if (prevSelected !== crntSelected) {
-      setSelected(crntSelected);
+      setSelected(typeof crntSelected === "string" ? [crntSelected] : crntSelected);
     }
   }, [crntSelected]);
   
@@ -186,7 +186,12 @@ export const TagPicker: React.FunctionComponent<ITagPickerProps> = (props: React
         }
       </Downshift>
 
-      <Tags values={selected.sort((a: string, b: string) => a.toLowerCase() < b.toLowerCase() ? -1 : 1 )} onRemove={onRemove} onCreate={onCreate} options={options} disableConfigurable={!!disableConfigurable} />
+      <Tags 
+        values={(selected || []).sort((a: string, b: string) => a.toLowerCase() < b.toLowerCase() ? -1 : 1 )} 
+        onRemove={onRemove} 
+        onCreate={onCreate} 
+        options={options} 
+        disableConfigurable={!!disableConfigurable} />
     </div>
   );
 };
\ No newline at end of file