Don't trigger the search function when modifiers are pressed.

src/OFS/zpt/main.zpt

@@ -202,20 +202,37 @@
 		// +++++++++++++++++++++++++++
 		// Tablefilter/Search Element
 		// +++++++++++++++++++++++++++
-		$(document).keypress( function(e) {
+
+		function isModifierKeyPressed(event) {
+			return event.altKey
+				|| event.ctrlKey
+				|| event.metaKey;
+		}
+
+		$(document).keypress( function(event) {
+
+			if (isModifierKeyPressed(event)) {
+				return; // ignore
+			}
+
 			// Set Focus to Tablefilter only when Modal Dialog is not Shown
 			if ( !$('#zmi-modal').hasClass('show') ) {
 				$('#tablefilter').focus();
 				// Prevent Submitting a form by hitting Enter
 				// https://stackoverflow.com/questions/895171/prevent-users-from-submitting-a-form-by-hitting-enter
-				if ( e.which == 13 ) {
+				if ( event.which == 13 ) {
 						event.preventDefault();
 						return false;
 				};
 			};
 		})
 
 		$('#tablefilter').keyup( function (e) {
+
+			if (isModifierKeyPressed(event)) {
+				return; // ignore
+			}
+
 			var tablefilter = $(this).val();
 			if( e.which==13 ) {
 				window.location.href = 'manage_findForm?btn_submit=Find&search_sub:int=1&obj_ids%3Atokens=' + tablefilter;