diff --git a/addons/mail/static/src/js/m2x_avatar_user.js b/addons/mail/static/src/js/m2x_avatar_user.js
index 6dca143b4f2..ffa2f7f8751 100644
--- a/addons/mail/static/src/js/m2x_avatar_user.js
+++ b/addons/mail/static/src/js/m2x_avatar_user.js
@@ -31,7 +31,6 @@ const M2XAvatarMixin = {
             throw new Error(`This widget is only supported on many2one and many2many fields pointing to ${JSON.stringify(this.supportedModels)}`);
         }
         this.className = `${this.className || ''} o_clickable_m2x_avatar`.trim();
-        this.noOpenChat = this.nodeOptions.no_open_chat || false;
     },
 
     //--------------------------------------------------------------------------
@@ -46,11 +45,8 @@ const M2XAvatarMixin = {
      * @returns {Promise}
      */
     async _openChat(params) {
-        if (!this.noOpenChat) {
-            const messaging = await Component.env.services.messaging.get();
-            return messaging.openChat(params);
-        }
-        return Promise.resolve();
+        const messaging = await Component.env.services.messaging.get();
+        return messaging.openChat(params);
     },
 };
 
@@ -189,7 +185,7 @@ export const Many2OneAvatarUser = Many2OneAvatar.extend(M2XAvatarMixin, {
     _onAvatarClicked(ev) {
         ev.stopPropagation(); // in list view, prevent from opening the record
         this._openChat({ userId: this.value.res_id });
-    },
+    }
 });
 
 export const KanbanMany2OneAvatarUser = Many2OneAvatarUser.extend({
diff --git a/addons/mail/static/tests/m2x_avatar_user_tests.js b/addons/mail/static/tests/m2x_avatar_user_tests.js
index 78829683bbb..bfdfa6e9183 100644
--- a/addons/mail/static/tests/m2x_avatar_user_tests.js
+++ b/addons/mail/static/tests/m2x_avatar_user_tests.js
@@ -313,110 +313,6 @@ QUnit.module('mail', {}, function () {
         kanban.destroy();
     });
 
-    QUnit.test('many2one_avatar_user widget in list view with no_open_chat set to true', async function (assert) {
-        assert.expect(3);
-
-        const { widget: list } = await start({
-            hasView: true,
-            View: ListView,
-            model: 'foo',
-            data: this.data,
-            arch: `<tree><field name="user_id" widget="many2one_avatar_user" options="{'no_open_chat': 1}"/></tree>`,
-            mockRPC(route, args) {
-                if (args.method === 'read') {
-                    assert.step(`read ${args.model} ${args.args[0]}`);
-                }
-                return this._super(...arguments);
-            },
-        });
-
-        mock.intercept(list, 'open_record', () => {
-            assert.step('open record');
-        });
-
-        assert.strictEqual(list.$('.o_data_cell span').text(), 'MarioLuigiMarioYoshi');
-
-        // sanity check: later on, we'll check that clicking on the avatar doesn't open the record
-        await dom.click(list.$('.o_data_row:first span'));
-
-        await dom.click(list.$('.o_data_cell:nth(0) .o_m2o_avatar > img'));
-        await dom.click(list.$('.o_data_cell:nth(1) .o_m2o_avatar > img'));
-        await dom.click(list.$('.o_data_cell:nth(2) .o_m2o_avatar > img'));
-
-
-        assert.verifySteps([
-            'open record',
-        ]);
-
-        list.destroy();
-    });
-
-    QUnit.test('many2one_avatar_user widget in kanban view', async function (assert) {
-        assert.expect(3);
-
-        const { widget: kanban } = await start({
-            hasView: true,
-            View: KanbanView,
-            model: 'foo',
-            data: this.data,
-            arch: `
-                <kanban>
-                    <templates>
-                        <t t-name="kanban-box">
-                            <div>
-                                <field name="user_id" widget="many2one_avatar_user" options="{'no_open_chat': 1}"/>
-                            </div>
-                        </t>
-                    </templates>
-                </kanban>`,
-        });
-
-        assert.strictEqual(kanban.$('.o_kanban_record').text().trim(), '');
-        assert.containsN(kanban, '.o_m2o_avatar', 4);
-        dom.click(kanban.$('.o_m2o_avatar:nth(0) > img'));
-        dom.click(kanban.$('.o_m2o_avatar:nth(1) > img'));
-        dom.click(kanban.$('.o_m2o_avatar:nth(2) > img'));
-        dom.click(kanban.$('.o_m2o_avatar:nth(3) > img'));
-
-        assert.verifySteps([], "no read res.user should be done since we don't want to open chat when the user clicks on avatar.");
-
-        kanban.destroy();
-    });
-
-    QUnit.test('many2many_avatar_user widget in form view', async function (assert) {
-        assert.expect(5);
-
-        const { widget: form } = await start({
-            hasView: true,
-            View: FormView,
-            model: 'foo',
-            data: this.data,
-            arch: `<form><field name="user_ids" widget="many2many_avatar_user" options="{'no_open_chat': 1}"/></form>`,
-            mockRPC(route, args) {
-                if (args.method === 'read') {
-                    assert.step(`read ${args.model} ${args.args[0]}`);
-                }
-                return this._super(...arguments);
-            },
-            res_id: 1,
-        });
-
-        assert.containsN(form, '.o_field_many2manytags.avatar.o_field_widget .badge', 2,
-            "should have 2 records");
-        assert.strictEqual(form.$('.o_field_many2manytags.avatar.o_field_widget .badge:first img').data('src'), '/web/image/res.users/11/avatar_128',
-            "should have correct avatar image");
-
-        await dom.click(form.$('.o_field_many2manytags.avatar .badge:first .o_m2m_avatar'));
-        await dom.click(form.$('.o_field_many2manytags.avatar .badge:nth(1) .o_m2m_avatar'));
-
-        assert.verifySteps([
-            "read foo 1",
-            'read res.users 11,23',
-        ]);
-
-        form.destroy();
-    });
-
     QUnit.test('many2one_avatar_user widget edited by the smart action "Assign to..."', async function (assert) {
         assert.expect(4);
 
diff --git a/addons/project/views/project_sharing_views.xml b/addons/project/views/project_sharing_views.xml
index 48d32910da9..7a0a6164622 100644
--- a/addons/project/views/project_sharing_views.xml
+++ b/addons/project/views/project_sharing_views.xml
@@ -103,7 +103,7 @@
                                     </span>
                                     <field name="kanban_state" widget="state_selection"/>
                                     <!-- TODO: [XBO] remove me in master -->
-                                    <field name="user_ids" string="Assignees" widget="many2many_avatar_user" options="{'no_open_chat': True}" invisible="1"/>
+                                    <field name="user_ids" string="Assignees" widget="many2many_avatar_user" invisible="1"/>
                                 </div>
                             </div>
                         </div>