Placing the script below under the ScriptManager of the page:
kendo.ui.Chat.fn._resetToolbarButtons = function (j) {
var k = this.wrapper.find(".k-toolbar-box");
if (!k.is(":visible")) {
k.show();
}
if (j.toolbar != false && "buttons" in j.toolbar) {
this.options.toolbar.buttons = j.toolbar.buttons;
}
}
<telerik:RadChat runat="server" ID="RadChat1" Height="400px">
<ClientEvents OnLoad="OnLoad" />
</telerik:RadChat>
<script>
function OnLoad(sender, args) {
sender.set_user({});
}
</script>
Steps to repro:
1. Go to https://demos.telerik.com/aspnet-ajax/chat/toolbar/defaultcs.aspx
2. Show the toolbar with the ellipses
3. Enter enough messages so that the scroll is shown and continue to enter
4. The toolbar drop down on each click of an icon
See the attached video for more information.