javascript alert showing html file name as title in Xcode simulator

My app is a hybrid app when I run the Xcode simulator then js alert (alert() function) showing an alert message with the file name as a title, till now it is working fine but I faced this issue only in Xcode 11.5, Xcode 11.4.1.

How can we hide the alert title? And also when I kill the application and quit the Xcode and open the app directly from a simulator without running source code from Xcode it is fine.

Code we are using:- alert("This is an alert")