Index: branches/5.3.x/core/admin_templates/incs/grid_blocks.tpl
===================================================================
diff -u -N -r15988 -r16372
--- branches/5.3.x/core/admin_templates/incs/grid_blocks.tpl	(.../grid_blocks.tpl)	(revision 15988)
+++ branches/5.3.x/core/admin_templates/incs/grid_blocks.tpl	(.../grid_blocks.tpl)	(revision 16372)
@@ -350,7 +350,12 @@
 			onkeypress="search_keydown(event, '<inp2:m_Param name="PrefixSpecial"/>', '<inp2:m_Param name="grid"/>', '<inp2:m_Param name="ajax"/>')"/>
 		<script type="text/javascript">
 			$('#' + jq('<inp2:SearchInputName field="$filter_field" filter_type="like" grid="$grid"/>')).autocomplete({
-				source: '<inp2:m_t pass="m,{$PrefixSpecial}" field="$filter_field" {$PrefixSpecial}_event="OnSuggestValuesJSON" no_amp="1" js_escape="1"/>'
+				source: '<inp2:m_t pass="m,{$PrefixSpecial}" field="$filter_field" {$PrefixSpecial}_event="OnSuggestValuesJSON" no_amp="1" js_escape="1"/>',
+				select: function (event, ui) {
+					if ( event.which === 13 ) {
+						search('<inp2:m_Param name="PrefixSpecial"/>', '<inp2:m_Param name="grid"/>', parseInt('<inp2:m_Param name="ajax"/>'));
+					}
+				}
 			});
 		</script>
 </inp2:m_DefineElement>
@@ -867,4 +872,4 @@
 			<inp2:m_RenderElement name="grid_pagination_elem" PrefixSpecial="$pagination_prefix" pass_params="1"/>
 		</inp2:m_if>
 	</inp2:m_if>
-</inp2:m_DefineElement>
\ No newline at end of file
+</inp2:m_DefineElement>