diff --git a/addons/mrp/models/mrp_workorder.py b/addons/mrp/models/mrp_workorder.py
index d5de05fe1e0..6ec91f49709 100644
--- a/addons/mrp/models/mrp_workorder.py
+++ b/addons/mrp/models/mrp_workorder.py
@@ -573,15 +573,11 @@ class MrpWorkorder(models.Model):
         workcenters = self.env['mrp.workcenter'].browse(workcenter_ids)
         unavailability_mapping = workcenters._get_unavailability_intervals(start_datetime, end_datetime)
 
-        # Only notable interval (more than one case) is send to the front-end (avoid sending useless information)
-        cell_dt = (scale in ['day', 'week'] and timedelta(hours=1)) or (scale == 'month' and timedelta(days=1)) or timedelta(days=28)
-
         def add_unavailability(row, workcenter_id=None):
             if row.get('groupedBy') and row.get('groupedBy')[0] == 'workcenter_id' and row.get('resId'):
                 workcenter_id = row.get('resId')
             if workcenter_id:
-                notable_intervals = filter(lambda interval: interval[1] - interval[0] >= cell_dt, unavailability_mapping[workcenter_id])
-                row['unavailabilities'] = [{'start': interval[0], 'stop': interval[1]} for interval in notable_intervals]
+                row['unavailabilities'] = [{'start': interval[0], 'stop': interval[1]} for interval in unavailability_mapping[workcenter_id]]
                 return {'workcenter_id': workcenter_id}
 
         for row in rows:
diff --git a/addons/mrp/views/mrp_workorder_views.xml b/addons/mrp/views/mrp_workorder_views.xml
index 6fea3f086ae..d484f3618af 100644
--- a/addons/mrp/views/mrp_workorder_views.xml
+++ b/addons/mrp/views/mrp_workorder_views.xml
@@ -321,6 +321,7 @@
     <record id="workcenter_line_gantt_production" model="ir.ui.view">
         <field name="name">mrp.production.work.order.gantt.production</field>
         <field name="model">mrp.workorder</field>
+        <field name="priority">20</field>
         <field name="arch" type="xml">
             <gantt class="o_mrp_workorder_gantt" date_stop="date_finished" date_start="date_start" string="Operations" default_group_by="production_id" create="0" delete="0"
                 progress="progress" plan="0"
@@ -328,7 +329,7 @@
                 decoration-success="state == 'done'"
                 decoration-warning="state == 'cancel' or (json_popover and 'text-warning' in json_popover)"
                 color="workcenter_id"
-                display_unavailability="1"
+                display_unavailability="0"
                 progress_bar="workcenter_id"
                 total_row="True"
                 js_class="mrp_workorder_gantt"
@@ -361,6 +362,7 @@
     <record id="mrp_workorder_view_gantt" model="ir.ui.view">
         <field name="name">mrp.workorder.view.gantt</field>
         <field name="model">mrp.workorder</field>
+        <field name="priority">10</field>
         <field name="arch" type="xml">
             <gantt class="o_mrp_workorder_gantt" date_stop="date_finished" date_start="date_start" string="Operations" default_group_by="workcenter_id" create="0"
                 delete="0" sample="1"