diff --git a/addons/project/models/project_task.py b/addons/project/models/project_task.py
index 50b93ffb7f1..758fdab1334 100644
--- a/addons/project/models/project_task.py
+++ b/addons/project/models/project_task.py
@@ -182,7 +182,6 @@ class Task(models.Model):
         'res.company', string='Company', compute='_compute_company_id', store=True, readonly=False, recursive=True,
         required=True, copy=True, default=_default_company_id)
     color = fields.Integer(string='Color Index')
-    project_color = fields.Integer(related='project_id.color', string='Project Color')
     rating_active = fields.Boolean(string='Project Rating Status', related="project_id.rating_active")
     attachment_ids = fields.One2many('ir.attachment', compute='_compute_attachment_ids', string="Main Attachments",
         help="Attachments that don't come from a message.")
diff --git a/addons/project/views/project_project_views.xml b/addons/project/views/project_project_views.xml
index 8e6e3ebc939..74258ff1913 100644
--- a/addons/project/views/project_project_views.xml
+++ b/addons/project/views/project_project_views.xml
@@ -67,7 +67,7 @@
                         </group>
                         <group>
                             <field name="active" invisible="1"/>
-                            <field name="user_id" string="Project Manager" widget="many2one_avatar_user" attrs="{'readonly':[('active','=',False)]}" domain="[('share', '=', False)]"/>
+                            <field name="user_id" string="Project Manager" widget="many2one_avatar_user" attrs="{'readonly':[('active','=',False)]}" domain="[('share', '=', False)]" options="{'no_quick_create': True}"/>
                             <label for="date_start" string="Planned Date"/>
                             <div name="dates" class="o_row">
                                 <field name="date_start" widget="daterange" options='{"related_end_date": "date"}'/>
diff --git a/addons/project/views/project_task_views.xml b/addons/project/views/project_task_views.xml
index cdc1ef057ff..193a1333453 100644
--- a/addons/project/views/project_task_views.xml
+++ b/addons/project/views/project_task_views.xml
@@ -716,7 +716,7 @@
             <field eval="2" name="priority"/>
             <field name="arch" type="xml">
                 <calendar date_start="date_deadline" string="Tasks" mode="month"
-                          color="color" event_limit="5" hide_time="true"
+                          color="stage_id" event_limit="5" hide_time="true"
                           event_open_popup="true" quick_add="false" show_unusual_days="True"
                           js_class="project_calendar"
                           scales="month,year">
@@ -740,7 +740,7 @@
             <field name="mode">primary</field>
             <field name="arch" type="xml">
                 <xpath expr="//calendar" position="attributes">
-                    <attribute name="color">project_color</attribute>
+                    <attribute name="color">project_id</attribute>
                 </xpath>
                 <xpath expr="//field[@name='project_id']" position="attributes">
                     <attribute name="filters">1</attribute>
diff --git a/addons/project_timesheet_holidays/views/hr_holidays_views.xml b/addons/project_timesheet_holidays/views/hr_holidays_views.xml
index 7d875c8b486..c437f479378 100644
--- a/addons/project_timesheet_holidays/views/hr_holidays_views.xml
+++ b/addons/project_timesheet_holidays/views/hr_holidays_views.xml
@@ -7,7 +7,7 @@
         <field name="inherit_id" ref="hr_holidays.edit_holiday_status_form"/>
         <field name="arch" type="xml">
             <xpath expr="//group[@name='visual']" position="before">
-                <group name="timesheet" groups="base.group_no_one" string="Timesheet">
+                <group name="timesheet" groups="base.group_no_one" string="Timesheets">
                     <div class="text-muted mb-4" colspan="2">
                         Generate timesheets when validating time off requests of this type
                     </div>
diff --git a/addons/sale_timesheet/views/hr_timesheet_views.xml b/addons/sale_timesheet/views/hr_timesheet_views.xml
index e900cf12e1f..b9b5beb31fe 100644
--- a/addons/sale_timesheet/views/hr_timesheet_views.xml
+++ b/addons/sale_timesheet/views/hr_timesheet_views.xml
@@ -45,7 +45,7 @@
                 <field name="commercial_partner_id" invisible="1" groups="sales_team.group_sale_salesman"/>
                 <field name="is_so_line_edited" invisible="1" groups="sales_team.group_sale_salesman"/>
                 <field name="allow_billable" invisible="1" groups="sales_team.group_sale_salesman"/>
-                <field name="so_line" widget="so_line_field" optional="show" options="{'no_create': True}" context="{'create': False, 'edit': False, 'delete': False}" attrs="{'invisible': [('allow_billable', '=', False)], 'readonly': [('readonly_timesheet', '=', True)]}" placeholder="Non-billable" groups="sales_team.group_sale_salesman"/>
+                <field name="so_line" widget="so_line_field" optional="show" options="{'no_create': True, 'no_open': True}" context="{'create': False, 'edit': False, 'delete': False}" attrs="{'invisible': [('allow_billable', '=', False)], 'readonly': [('readonly_timesheet', '=', True)]}" placeholder="Non-billable" groups="sales_team.group_sale_salesman"/>
             </xpath>
         </field>
     </record>
diff --git a/addons/sale_timesheet/views/project_task_views.xml b/addons/sale_timesheet/views/project_task_views.xml
index b170f820d93..80c6279ec26 100644
--- a/addons/sale_timesheet/views/project_task_views.xml
+++ b/addons/sale_timesheet/views/project_task_views.xml
@@ -131,7 +131,7 @@
                         optional="hide"/>
                     <field name="so_line" groups="sales_team.group_sale_salesman"
                         attrs="{'column_invisible': [('parent.allow_billable', '=', False)], 'readonly': [('readonly_timesheet', '=', True)]}"
-                        context="{'with_remaining_hours': True, 'with_price_unit': True}" options="{'no_create': True}"
+                        context="{'with_remaining_hours': True, 'with_price_unit': True}" options="{'no_create': True, 'no_open': True}"
                         domain="[('is_service', '=', True), ('order_partner_id', 'child_of', parent.partner_id), ('is_expense', '=', False), ('state', 'in', ['sale', 'done'])]"
                         optional="hide"/>
                 </xpath>