diff --git a/api/etemplate.php b/api/etemplate.php
index 4f6917fa3e..4b079ec5a4 100644
--- a/api/etemplate.php
+++ b/api/etemplate.php
@@ -13,11 +13,12 @@
 use EGroupware\Api;
 
 // add et2- prefix to following widgets/tags, if NO <overlay legacy="true"
-const ADD_ET2_PREFIX_REGEXP = '#<((/?)([vh]?box|date(-time[^\s]*|-duration|-since)?|textbox|textarea|button|colorpicker|url(-email|-phone|-fax)?))(/?|\s[^>]*)>#m';
+const ADD_ET2_PREFIX_REGEXP = '#<((/?)([vh]?box|date(-time[^\s]*|-duration|-since)?|button|colorpicker|url(-email|-phone|-fax)?))(/?|\s[^>]*)>#m';
 const ADD_ET2_PREFIX_LAST_GROUP = 6;
 
 // unconditional of legacy add et2- prefix to this widgets
-const ADD_ET2_PREFIX_LEGACY_REGEXP = '#<(description|label|avatar|lavatar|image|vfs-mime|vfs-uid|vfs-gid|link|link-[a-z]+|favorites)\s([^>]+)/>#m';
+const ADD_ET2_PREFIX_LEGACY_REGEXP = '#<(description|searchbox|label|avatar|lavatar|image|vfs-mime|vfs-uid|vfs-gid|link|link-[a-z]+|favorites)\s([^>]+)/>#m';
+const ADD_ET2_PREFIX_LEGACY_LAST_GROUP = 2;
 
 // switch evtl. set output-compression off, as we can't calculate a Content-Length header with transparent compression
 ini_set('zlib.output_compression', 0);
@@ -160,8 +161,26 @@ function send_template()
 		$str = preg_replace('/<(image|description)\s([^><]*)expose_view="true"\s([^><]*)\\/>/',
 			'<et2-$1-expose $2 $3></et2-$1-expose>', $str);
 
+		// fix <textbox multiline="true" .../> --> <et2-textarea .../>
+		$str = preg_replace('#<textbox(.*?)\smultiline="true"(.*?)/>#', '<et2-textarea$1$2></et2-textarea>', $str);
+
+		// fix <(textbox|int(eger)?|float) precision="int(eger)?|float" .../> --> <et2-number precision=.../> or <et2-textbox .../>
+		$str = preg_replace_callback('#<(textbox|int(eger)?|float|number).*?\s(type="(int(eger)?|float)")?.*?(/|></textbox)>#',
+			static function ($matches)
+			{
+				if ($matches[1] === 'textbox' && !in_array($matches[4], ['float', 'int', 'integer'], true))
+				{
+					return '<et2-'.substr($matches[0], 1, -strlen($matches[6])-1).'></et2-textbox>'; // regular textbox --> nothing to do
+				}
+				$type = $matches[1] === 'float' || $matches[4] === 'float' ? 'float' : 'int';
+				$tag = str_replace('<' . $matches[1], '<et2-number', substr($matches[0], 0, -2));
+				if (!empty($matches[3])) $tag = str_replace($matches[3], '', $tag);
+				if ($type !== 'float') $tag .= ' precision="0"';
+				return $tag . '></et2-number>';
+			}, $str);
+
 		// modify <(vfs-mime|link-string|link-list) --> <et2-*
-		$str = preg_replace(ADD_ET2_PREFIX_LEGACY_REGEXP, '<et2-$1 $2></et2-$1>',
+		$str = preg_replace(ADD_ET2_PREFIX_LEGACY_REGEXP, '<et2-$1 $'.ADD_ET2_PREFIX_LEGACY_LAST_GROUP.'></et2-$1>',
 			str_replace('<description/>', '<et2-description></et2-description>', $str));
 
 		// change link attribute only_app to et2-link attribute app and map r/o link-entry to link
@@ -278,33 +297,6 @@ function send_template()
 		}
 		else
 		{
-			// fix deprecated attributes: needed, blur, ...
-			static $deprecated = [
-				'needed' => 'required',
-				'blur' => 'placeholder',
-			];
-			$str = preg_replace_callback('#<[^ ]+[^>]* (' . implode('|', array_keys($deprecated)) . ')="([^"]+)"[ />]#',
-				static function ($matches) use ($deprecated) {
-					return str_replace($matches[1] . '="', $deprecated[$matches[1]] . '="', $matches[0]);
-				}, $str);
-
-			// fix <textbox multiline="true" .../> --> <textarea .../> (et2-prefix and self-closing is handled below)
-			$str = preg_replace('#<textbox(.*?)\smultiline="true"(.*?)/>#u', '<textarea$1$2/>', $str);
-
-			// fix <(textbox|int(eger)?|float) precision="int(eger)?|float" .../> --> <et2-number precision=...></et2-number>
-			$str = preg_replace_callback('#<(textbox|int(eger)?|float|number).*?\s(type="(int(eger)?|float)")?.*?/>#u',
-				static function ($matches) {
-					if ($matches[1] === 'textbox' && !in_array($matches[4], ['float', 'int', 'integer'], true))
-					{
-						return $matches[0]; // regular textbox --> nothing to do
-					}
-					$type = $matches[1] === 'float' || $matches[4] === 'float' ? 'float' : 'int';
-					$tag = str_replace('<' . $matches[1], '<et2-number', substr($matches[0], 0, -2));
-					if (!empty($matches[3])) $tag = str_replace($matches[3], '', $tag);
-					if ($type !== 'float') $tag .= ' precision="0"';
-					return $tag . '></et2-number>';
-				}, $str);
-
 			// fix <button(only)?.../> --> <et2-button(-image)? noSubmit="true".../>
 			$str = preg_replace_callback('#<button(only)?\s(.*?)/>#u', function ($matches) use ($name) {
 				$tag = 'et2-button';
@@ -354,8 +346,18 @@ function send_template()
 			preg_match_all('/(^| )([a-z\d_-]+)="([^"]+)"/i', $matches[3], $attrs, PREG_PATTERN_ORDER);
 			$attrs = array_combine($attrs[2], $attrs[3]);
 
+			// fix deprecated attributes: needed, blur, ...
+			static $deprecated = [
+				'needed' => 'required',
+				'blur' => 'placeholder',
+			];
 			foreach($attrs as $name => $value)
 			{
+				if (isset($deprecated[$name]))
+				{
+					unset($attrs[$name]);
+					$attrs[$name = $deprecated[$name]] = $value;
+				}
 				if (count($parts = preg_split('/[_-]/', $name)) > 1)
 				{
 					if ($name === 'parent_node') $parts[1] = 'Id';  // we can not use DOM property parentNode --> parentId
diff --git a/api/js/etemplate/Et2Textbox/Et2Password.ts b/api/js/etemplate/Et2Textbox/Et2Password.ts
index 753fcab6c9..d3b74ab336 100644
--- a/api/js/etemplate/Et2Textbox/Et2Password.ts
+++ b/api/js/etemplate/Et2Textbox/Et2Password.ts
@@ -38,9 +38,9 @@ export class Et2Password extends Et2InvokerMixin(Et2Textbox)
 		};
 	}
 
-	constructor()
+	constructor(...args : any[])
 	{
-		super();
+		super(...args);
 
 		this.plaintext = true;
 		this.suggest = 0;
diff --git a/api/js/etemplate/Et2Textbox/Et2Searchbox.ts b/api/js/etemplate/Et2Textbox/Et2Searchbox.ts
new file mode 100644
index 0000000000..393da9e87f
--- /dev/null
+++ b/api/js/etemplate/Et2Textbox/Et2Searchbox.ts
@@ -0,0 +1,81 @@
+/**
+ * EGroupware eTemplate2 - Searchbox widget
+ *
+ * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
+ * @package api
+ * @link https://www.egroupware.org
+ * @author Ralf Becker
+ */
+
+/* eslint-disable import/no-extraneous-dependencies */
+import {Et2Textbox} from "./Et2Textbox";
+
+/**
+ * @customElement et2-searchbox
+ */
+export class Et2Searchbox extends Et2Textbox
+{
+	/** @type {any} */
+	static get properties()
+	{
+		return {
+			...super.properties,
+			/**
+			 * Define whether the searchbox overlays while it's open (true) or stay as solid box in front of the search button (false). Default is false.
+			 * @todo implement again
+			 */
+			overlay: Boolean,
+			/**
+			 * Define whether the searchbox should be a fix input field or flexible search button. Default is true (fix).
+			 * @todo implement again
+			 */
+			fix: Boolean,
+		};
+	}
+
+	constructor(...args : any[])
+	{
+		super(...args);
+
+		this.overlay = false;
+		this.fix = true;
+
+		this.clearable = true;
+		this.type = 'search';
+		this.enterkeyhint = 'search';
+	}
+
+	/**
+	 * Overwritten to trigger a change/search
+	 *
+	 * @param event
+	 */
+	handleKeyDown(event: KeyboardEvent)
+	{
+		const hasModifier = event.metaKey || event.ctrlKey || event.shiftKey || event.altKey;
+
+		// Pressing enter when focused on an input should submit the form like a native input, but we wait a tick before
+		// submitting to allow users to cancel the keydown event if they need to
+		if (event.key === 'Enter' && !hasModifier)
+		{
+			event.preventDefault();
+
+			this._oldChange(event);
+		}
+	}
+
+	/**
+	 * Overwritten to trigger a change/search
+	 *
+	 * @param event
+	 */
+	handleClearClick(event : MouseEvent)
+	{
+		event.preventDefault();
+
+		this.value = '';
+		this._oldChange(event);
+	}
+}
+// @ts-ignore TypeScript is not recognizing that this is a LitElement
+customElements.define("et2-searchbox", Et2Searchbox);
\ No newline at end of file
diff --git a/api/js/etemplate/Et2Url/Et2Url.ts b/api/js/etemplate/Et2Url/Et2Url.ts
index 29dcf65b6d..04762ee752 100644
--- a/api/js/etemplate/Et2Url/Et2Url.ts
+++ b/api/js/etemplate/Et2Url/Et2Url.ts
@@ -56,9 +56,10 @@ export class Et2Url extends Et2InvokerMixin(Et2Textbox)
 		];
 	}
 
-	constructor()
+	constructor(...args : any[])
 	{
-		super();
+		super(...args);
+
 		this._invokerLabel = '⎆';
 		this._invokerTitle = 'Open';
 		this._invokerAction = () => {
diff --git a/api/js/etemplate/Et2Url/Et2UrlEmail.ts b/api/js/etemplate/Et2Url/Et2UrlEmail.ts
index 93cd753851..847d5cdd99 100644
--- a/api/js/etemplate/Et2Url/Et2UrlEmail.ts
+++ b/api/js/etemplate/Et2Url/Et2UrlEmail.ts
@@ -34,9 +34,10 @@ export class Et2UrlEmail extends Et2InvokerMixin(Et2Textbox)
 		];
 	}
 
-	constructor()
+	constructor(...args : any[])
 	{
-		super();
+		super(...args);
+
 		this.defaultValidators.push(new IsEmail());
 		this._invokerLabel = '@';
 		this._invokerTitle = 'Compose mail to';
diff --git a/api/js/etemplate/Et2Url/Et2UrlEmailReadonly.ts b/api/js/etemplate/Et2Url/Et2UrlEmailReadonly.ts
index 1bc381432d..b154ca2edf 100644
--- a/api/js/etemplate/Et2Url/Et2UrlEmailReadonly.ts
+++ b/api/js/etemplate/Et2Url/Et2UrlEmailReadonly.ts
@@ -73,11 +73,6 @@ export class Et2UrlEmailReadonly extends Et2UrlReadonly
 		return super.value;
 	}
 
-	constructor()
-	{
-		super();
-	}
-
 	transformAttributes(attrs)
 	{
 		if (typeof attrs.onclick === 'undefined')
diff --git a/api/js/etemplate/Et2Url/Et2UrlFax.ts b/api/js/etemplate/Et2Url/Et2UrlFax.ts
index 1bb7f58c3d..cfa4bed99b 100644
--- a/api/js/etemplate/Et2Url/Et2UrlFax.ts
+++ b/api/js/etemplate/Et2Url/Et2UrlFax.ts
@@ -34,9 +34,10 @@ export class Et2UrlFax extends Et2UrlPhone
 		];
 	}
 
-	constructor()
+	constructor(...args : any[])
 	{
-		super();
+		super(...args);
+
 		//this.defaultValidators.push(...);
 		this._invokerLabel = '📠';
 		this._invokerTitle = 'Send';
diff --git a/api/js/etemplate/Et2Url/Et2UrlFaxReadonly.ts b/api/js/etemplate/Et2Url/Et2UrlFaxReadonly.ts
index b238c2c13e..7a05075b97 100644
--- a/api/js/etemplate/Et2Url/Et2UrlFaxReadonly.ts
+++ b/api/js/etemplate/Et2Url/Et2UrlFaxReadonly.ts
@@ -16,11 +16,6 @@ import {Et2UrlReadonly} from "./Et2UrlReadonly";
  */
 export class Et2UrlFaxReadonly extends Et2UrlReadonly
 {
-	constructor()
-	{
-		super();
-	}
-
 	transformAttributes(attrs)
 	{
 		if (typeof attrs.onclick === 'undefined')
diff --git a/api/js/etemplate/Et2Url/Et2UrlPhone.ts b/api/js/etemplate/Et2Url/Et2UrlPhone.ts
index 74b286ca2d..118e0fd8c1 100644
--- a/api/js/etemplate/Et2Url/Et2UrlPhone.ts
+++ b/api/js/etemplate/Et2Url/Et2UrlPhone.ts
@@ -32,9 +32,10 @@ export class Et2UrlPhone extends Et2InvokerMixin(Et2Textbox)
 		];
 	}
 
-	constructor()
+	constructor(...args : any[])
 	{
-		super();
+		super(...args);
+
 		//this.defaultValidators.push(...);
 		this._invokerLabel = '✆';
 		this._invokerTitle = 'Call';
diff --git a/api/js/etemplate/Et2Url/Et2UrlPhoneReadonly.ts b/api/js/etemplate/Et2Url/Et2UrlPhoneReadonly.ts
index 131c511865..488ca914fe 100644
--- a/api/js/etemplate/Et2Url/Et2UrlPhoneReadonly.ts
+++ b/api/js/etemplate/Et2Url/Et2UrlPhoneReadonly.ts
@@ -16,11 +16,6 @@ import {Et2UrlReadonly} from "./Et2UrlReadonly";
  */
 export class Et2UrlPhoneReadonly extends Et2UrlReadonly
 {
-	constructor()
-	{
-		super();
-	}
-
 	transformAttributes(attrs)
 	{
 		if (typeof attrs.onclick === 'undefined')
diff --git a/api/js/etemplate/Et2Url/Et2UrlReadonly.ts b/api/js/etemplate/Et2Url/Et2UrlReadonly.ts
index e9c19dd60f..938b1ad793 100644
--- a/api/js/etemplate/Et2Url/Et2UrlReadonly.ts
+++ b/api/js/etemplate/Et2Url/Et2UrlReadonly.ts
@@ -19,11 +19,6 @@ import {Et2Url} from "./Et2Url";
  */
 export class Et2UrlReadonly extends Et2Description
 {
-	constructor()
-	{
-		super();
-	}
-
 	static get styles()
 	{
 		return [
diff --git a/api/js/etemplate/et2_extension_nextmatch.ts b/api/js/etemplate/et2_extension_nextmatch.ts
index d8921d3b1a..8eb843a982 100644
--- a/api/js/etemplate/et2_extension_nextmatch.ts
+++ b/api/js/etemplate/et2_extension_nextmatch.ts
@@ -77,6 +77,7 @@ import {loadWebComponent} from "./Et2Widget/Et2Widget";
 import {Et2AccountFilterHeader} from "./Nextmatch/Headers/AccountFilterHeader";
 import {Et2SelectCategory} from "./Et2Select/Et2SelectCategory";
 import {Et2ColumnSelection} from "./Et2Nextmatch/ColumnSelection";
+import {Et2Searchbox} from "./Et2Textbox/Et2Searchbox";
 
 //import {et2_selectAccount} from "./et2_widget_SelectAccount";
 let keep_import : Et2AccountFilterHeader
@@ -3208,7 +3209,7 @@ export class et2_nextmatch_header_bar extends et2_DOMWidget implements et2_INext
 		}
 	};
 	headers : { id : string }[] | et2_widget[];
-	et2_searchbox : et2_inputWidget;
+	et2_searchbox : Et2Searchbox;
 	private favorites : et2_DOMWidget;  // Actually favorite
 
 	private nextmatch : et2_nextmatch;
@@ -3324,14 +3325,14 @@ export class et2_nextmatch_header_bar extends et2_DOMWidget implements et2_INext
 			{
 				self.nextmatch.applyFilters({search: this.get_value()});
 			},
-			value: settings.search,
+			value: settings.search || '',
 			fix: !egwIsMobile()
 		};
 		// searchbox widget
-		this.et2_searchbox = <et2_searchbox>et2_createWidget('searchbox', searchbox_options, this);
+		this.et2_searchbox = <Et2Searchbox>loadWebComponent('et2-searchbox', searchbox_options, this);
 
 		// Set activeFilters to current value
-		this.nextmatch.activeFilters.search = settings.search;
+		this.nextmatch.activeFilters.search = settings.search || '';
 
 		this.et2_searchbox.set_value(settings.search);
 		jQuery(this.et2_searchbox.getInputNode()).attr("aria-label", egw.lang("search"));
diff --git a/api/js/etemplate/etemplate2.ts b/api/js/etemplate/etemplate2.ts
index c7efe5b5cb..13a0b5b2e5 100644
--- a/api/js/etemplate/etemplate2.ts
+++ b/api/js/etemplate/etemplate2.ts
@@ -86,6 +86,7 @@ import "./Layout/RowLimitedMixin";
 import "./Et2Vfs/Et2VfsMime";
 import "./Et2Vfs/Et2VfsUid";
 import "./Et2Textbox/Et2Password";
+import './Et2Textbox/Et2Searchbox';
 
 /* Include all widget classes here, we only care about them registering, not importing anything*/
 import './et2_widget_vfs'; // Vfs must be first (before et2_widget_file) due to import cycle