Update project_task.py

custom_project/models/project_task.py

@@ -54,6 +54,7 @@ class ProjectTask(models.Model):
                 rec.date_deadline = datetime.combine(rec.x_end_date, datetime.min.time()) + timedelta(hours=12)
 
     def write(self, vals):
+        res = super().write(vals)
         if vals and type(vals) == dict:
             for rec in self:
                 if vals.get("x_start_date"):
@@ -61,4 +62,4 @@ class ProjectTask(models.Model):
                         
                 if vals.get("x_end_date"):
                     rec.date_deadline = datetime.combine(rec.x_end_date, datetime.min.time()) + timedelta(hours=12)
-        return super().write(vals)
+        return res