diff --git a/addons/web/static/src/scss/form_view.scss b/addons/web/static/src/scss/form_view.scss
index 8b20a0c7927..b0419de7b29 100644
--- a/addons/web/static/src/scss/form_view.scss
+++ b/addons/web/static/src/scss/form_view.scss
@@ -577,14 +577,16 @@ $o-form-label-margin-right: 0px;
             }
         }
 
-        :not(.o_row):not(.o_data_cell) > .o_field_widget,
-        .o_row > .o_field_widget:last-child { // Note: this does not take care
-                                              // of an invisible last-child but
-                                              // it does not really matter
-            // Makes extra buttons (e.g. m2o external button) overflow on the
-            // right padding of the parent element
-            .o_input_dropdown {
-                flex: 1 0 auto;
+        @include media-breakpoint-up(sm) {
+            :not(.o_row):not(.o_data_cell) > .o_field_widget,
+            .o_row > .o_field_widget:last-child { // Note: this does not take care
+                                                // of an invisible last-child but
+                                                // it does not really matter
+                // Makes extra buttons (e.g. m2o external button) overflow on the
+                // right padding of the parent element
+                .o_input_dropdown {
+                    flex: 1 0 auto;
+                }
             }
         }