diff --git a/mail/js/app.js b/mail/js/app.js
index 8c9a3eb3b1..96e16f0c3c 100644
--- a/mail/js/app.js
+++ b/mail/js/app.js
@@ -297,17 +297,17 @@ app.classes.mail = AppJS.extend(
 	{
 		// Only cache first chunk of rows, if no search filter
 		if((!query_context || !query_context.start) && query_context.count == 0 &&
-			query_context.self._filters.selectedFolder &&
-			!(!query_context.self._filters || query_context.self._filters.search)
+			query_context.filters && query_context.filters.selectedFolder &&
+			!(!query_context.filters || query_context.filters.search)
 		)
 		{
 			// Make sure keys match, even if some filters are not defined
 			// using JSON.stringfy() directly gave a crash in Safari 7.0.4
 			return this.egw.jsonEncode({
-				selectedFolder: query_context.self._filters.selectedFolder || '',
-				filter: query_context.self._filters.filter || '',
-				filter2: query_context.self._filters.filter2 || '',
-				sort: query_context.self._filters.sort
+				selectedFolder: query_context.filters.selectedFolder || '',
+				filter: query_context.filters.filter || '',
+				filter2: query_context.filters.filter2 || '',
+				sort: query_context.filters.sort
 			});
 		}
 		return false;
@@ -3083,7 +3083,7 @@ app.classes.mail = AppJS.extend(
 		this.compose_resizeHandler();
 		return true;
 	},
-	
+
 	/**
 	* Upload for import (VFS)
 	*
diff --git a/phpgwapi/js/jsapi/egw_data.js b/phpgwapi/js/jsapi/egw_data.js
index 9470e25bf9..d477ad1b20 100644
--- a/phpgwapi/js/jsapi/egw_data.js
+++ b/phpgwapi/js/jsapi/egw_data.js
@@ -419,6 +419,9 @@ egw.extend("data", egw.MODULE_APP_LOCAL, function (_app, _wnd) {
 					}
 				}
 			}
+			// create a clone of filters, which can be used in parseServerResponse and cache callbacks
+			// independent of changes happening while waiting for the response
+			_context.filters = jQuery.extend({}, _filters);
 			var request = egw.json(
 				_app+".etemplate_widget_nextmatch.ajax_get_rows.etemplate",
 				[