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Support Article

Clicking button with Visible When freezes the screen



Clicking any button having Visible When or an icon, a gear icon against any layout property for example, freezes the screen.

The issue is replicable only while accessing the application on Chrome and the locale is set to tr_TR. Everything works as expected if Chrome or Turkish locale is not used.

Error Messages

Not Applicable

Steps to Reproduce

1. Create a section and use a button to perform refresh section, or enable or disable some content of the screen.
2. Change operator locale to tr_TR.
3. Run the test case.

Root Cause

A defect in Pegasystems’ code or rules:

The issue is with JavaScript toLowerCase() function.

var newStream = "İstanbul"; //newStream.length is 8
var lowerCaseNewStream = newStream.toLowerCase(); //lowerCaseNewStream.length is 9 though it has only 8 lowercase characters

Using lowercase in pzpega_ui_changetracker results in wrong length, thereby passing invalid data to JSON Parsing and the UI does not render.

pega.ui.ChangeTracker.prototype.parseForChangeTrackerDiv = function(newStream, declareExpression) {  var ctJSON; 
var searchStartsAt = 0; 
if(!declareExpression) { 
var lowerCaseNewStream = newStream.toLowerCase(); 

The solution for this would be to change toLowerCase to toUpperCase and get the start and end div tag length in the above JavaScript function.

The solution checks for browser (Chrome or not) used and based on that, it replaces selective characters (turkish - İIŞĞÜÇÖ) using a regex. 
Letters replaced are { "İ": "i", "Ş": "ş", "Ğ": "ğ", "Ü": "ü", "Ö": "ö", "Ç": "ç" };


Apply HFix-27285.

Published May 13, 2016 - Updated October 8, 2020

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