[FIX] context do not apply to m2m

views/training_course_view.xml

@@ -16,7 +16,7 @@
                     </group>
                     <notebook>
                         <page name="sessions" string="Sessions">
-                            <field name="session_ids" context="{'default_course_id': active_id,}">
+                            <field name="session_ids">
                                 <tree>
                                     <field name="sequence" widget="handle"/>
                                     <field name="name" />