Index: branches/5.2.x/core/admin_templates/incs/grid_blocks.tpl
===================================================================
--- branches/5.2.x/core/admin_templates/incs/grid_blocks.tpl
+++ branches/5.2.x/core/admin_templates/incs/grid_blocks.tpl
@@ -739,6 +739,11 @@
 
 	  		<inp2:m_if check="{$PrefixSpecial}_UseAutoRefresh">
 	  			function refresh_grid() {
+	  				// Don't refresh grid, that has open modal windows.
+	  				if ( $modal_windows && TB.windowMetaData.length > 1 ) {
+	  					return;
+	  				}
+
 	  				// window.location.reload();
 	  				var $window_url = window.location.href;
 	  				if ($window_url.indexOf('skip_session_refresh=1') == -1) {