diff -Nur gnome-control-center-3.14.5_orig/panels/universal-access/uap.ui gnome-control-center-3.14.5/panels/universal-access/uap.ui
--- gnome-control-center-3.14.5_orig/panels/universal-access/uap.ui	2017-05-23 21:59:10.676257462 +0800
+++ gnome-control-center-3.14.5/panels/universal-access/uap.ui	2017-05-23 22:31:42.502077833 +0800
@@ -1868,6 +1868,7 @@
                                 <property name="visible">True</property>
                                 <property name="can_focus">True</property>
                                 <property name="adjustment">click_delay_adjustment</property>
+                                <property name="width_request">200</property>
                                 <property name="draw_value">False</property>
                                 <child internal-child="accessible">
                                   <object class="AtkObject" id="pointing_secondary_click_delay_scale-atkobject">
@@ -2033,6 +2034,7 @@
                                 <property name="visible">True</property>
                                 <property name="can_focus">True</property>
                                 <property name="adjustment">dwell_time_adjustment</property>
+                                <property name="width_request">200</property>
                                 <property name="draw_value">False</property>
                                 <property name="value_pos">right</property>
                               </object>
@@ -2122,6 +2124,7 @@
                                 <property name="visible">True</property>
                                 <property name="can_focus">True</property>
                                 <property name="adjustment">dwell_threshold_adjustment</property>
+                                <property name="width_request">200</property>
                                 <property name="digits">0</property>
                                 <property name="draw_value">False</property>
                               </object>