diff --git a/web_widget_sub_view/README.rst b/web_widget_sub_view/README.rst
index 23efebb0189..23c350d2de7 100644
--- a/web_widget_sub_view/README.rst
+++ b/web_widget_sub_view/README.rst
@@ -64,8 +64,18 @@ Also, you can use:
 
 - view-type: To force an specific view kind. By default it uses list in
   desktop and kanban in mobile.
-- create-action: To force an specific action for creation (it is a
-  xmlid)
+- create-action: To force an specific action for creation. Depending on
+  create-action-type, it is either the name of a Python method on the
+  model, or the id/xmlid of an existing action.
+- create-action-type: How create-action should be interpreted:
+
+  - object (default): create-action is a method name on the model,
+    called server-side. Whatever action it returns (e.g. opening a
+    wizard) is executed.
+  - action: create-action is an existing action's id or xmlid (e.g.
+    ``%(module.action_xmlid)s``), which is loaded and executed directly,
+    without calling any method.
+
 - open-action: The function to launch to open the record. By default, it
   uses get_formview_action.
 - filter: set 0 to hide the filters
diff --git a/web_widget_sub_view/readme/USAGE.md b/web_widget_sub_view/readme/USAGE.md
index 49b6cdc0f42..57fb0782d75 100644
--- a/web_widget_sub_view/readme/USAGE.md
+++ b/web_widget_sub_view/readme/USAGE.md
@@ -17,7 +17,13 @@ Context is recomended for setting default values and forcing specific views or d
 Also, you can use:
 
 - view-type: To force an specific view kind. By default it uses list in desktop and kanban in mobile.
-- create-action: To force an specific action for creation (it is a xmlid)
+- create-action: To force an specific action for creation. Depending on create-action-type, it is either
+  the name of a Python method on the model, or the id/xmlid of an existing action.
+- create-action-type: How create-action should be interpreted:
+  - object (default): create-action is a method name on the model, called server-side. Whatever action
+    it returns (e.g. opening a wizard) is executed.
+  - action: create-action is an existing action's id or xmlid (e.g. `%(module.action_xmlid)s`), which is
+    loaded and executed directly, without calling any method.
 - open-action: The function to launch to open the record. By default, it uses get_formview_action.
 - filter: set 0 to hide the filters
 - group-by: set 0 to hide the group-by
diff --git a/web_widget_sub_view/static/description/index.html b/web_widget_sub_view/static/description/index.html
index 21d1cbc3081..ff3fddffe4d 100644
--- a/web_widget_sub_view/static/description/index.html
+++ b/web_widget_sub_view/static/description/index.html
@@ -3,7 +3,7 @@
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="Docutils: https://docutils.sourceforge.io/" />
-<title>Web Widget Sub View</title>
+<title>README.rst</title>
 <style type="text/css">
 
 /*
@@ -408,8 +408,18 @@ <h2><a class="toc-backref" href="#toc-entry-1">Usage</a></h2>
 <ul class="simple">
 <li>view-type: To force an specific view kind. By default it uses list in
 desktop and kanban in mobile.</li>
-<li>create-action: To force an specific action for creation (it is a
-xmlid)</li>
+<li>create-action: To force an specific action for creation. Depending on
+create-action-type, it is either the name of a Python method on the
+model, or the id/xmlid of an existing action.</li>
+<li>create-action-type: How create-action should be interpreted:<ul>
+<li>object (default): create-action is a method name on the model,
+called server-side. Whatever action it returns (e.g. opening a
+wizard) is executed.</li>
+<li>action: create-action is an existing action’s id or xmlid (e.g.
+<tt class="docutils literal">%(module.action_xmlid)s</tt>), which is loaded and executed directly,
+without calling any method.</li>
+</ul>
+</li>
 <li>open-action: The function to launch to open the record. By default, it
 uses get_formview_action.</li>
 <li>filter: set 0 to hide the filters</li>
diff --git a/web_widget_sub_view/static/src/sub_view_widget/sub_view_widget.esm.js b/web_widget_sub_view/static/src/sub_view_widget/sub_view_widget.esm.js
index fd5a5804ade..0f9258f177e 100644
--- a/web_widget_sub_view/static/src/sub_view_widget/sub_view_widget.esm.js
+++ b/web_widget_sub_view/static/src/sub_view_widget/sub_view_widget.esm.js
@@ -67,7 +67,7 @@ class SubViewWidget extends Component {
         if (this.props.createAction) {
             this.action.doActionButton({
                 name: this.props.createAction,
-                type: "action",
+                type: this.props.createActionType,
                 resModel: this.props.record.resModel,
                 resId: this.props.record.resId,
                 resIds: this.props.record.resIds,
@@ -108,6 +108,7 @@ SubViewWidget.props = {
     resModel: String,
     recordAction: String,
     createAction: {type: String, optional: true},
+    createActionType: {type: String, optional: true},
     context: String,
     domain: String,
     ViewType: {type: String, optional: true},
@@ -125,6 +126,7 @@ SubViewWidget.extractProps = ({attrs}) => {
         context: attrs.context || "{}",
         recordAction: attrs["open-action"] || "get_formview_action",
         createAction: attrs["create-action"],
+        createActionType: attrs["create-action-type"] || "object",
         domain: attrs.domain || "[]",
         ViewType: attrs["view-type"],
         filter: Boolean(JSON.parse(attrs.filter || "1")),
diff --git a/web_widget_sub_view/static/src/sub_view_widget/sub_view_widget.scss b/web_widget_sub_view/static/src/sub_view_widget/sub_view_widget.scss
index bd6e8bf4546..1b09eea595a 100644
--- a/web_widget_sub_view/static/src/sub_view_widget/sub_view_widget.scss
+++ b/web_widget_sub_view/static/src/sub_view_widget/sub_view_widget.scss
@@ -5,3 +5,28 @@
     > :first-child:not(.o_group).o_widget_sub_view_widget {
     @include o-form-sheet-negative-margin;
 }
+
+.o_notebook.vertical
+    .o_notebook_content
+    > .tab-pane
+    > :first-child:not(.o_group).o_widget_sub_view_widget {
+    margin-left: 0;
+    margin-right: 0;
+}
+
+.o_widget_sub_view_widget {
+    position: relative;
+
+    // !important: the rules being overridden are nested under `html .o_web_client`,
+    // which outranks this selector's specificity regardless of source order.
+    .o_content {
+        position: static !important;
+        height: auto !important;
+        overflow: visible !important;
+
+        > .o_view_controller {
+            position: static !important;
+            height: auto !important;
+        }
+    }
+}