Small Docs issue on https://docs.telerik.com/devtools/aspnet-ajax/controls/combobox/client-side-programming/events/onclienttextchange
The OnClientTextChange client-side event occurs when the user enters custom text in the input field of RadComboBox (if AllowCustomText property is True). OnClientTextChange doesn't fire until the user hits Enter or clicks outside the combobox.
I discovered that clicking outside the box does not fire this event.
Marc