I have used code from this example - https://docs.telerik.com/kendo-ui/controls/scheduling/scheduler/how-to/AngularJS/editing-using-contextmenu - to create a context menu.
Occasionally the menu will close immediately after it is displayed, so all you see is a flash of the menu. This has only happened on Chrome on Windows 10.
It only happens very occasionally, I cannot recreate it at will.
Pressing F5 does not fix it. Only restarting Chrome seems to fix the issue.
See attached video which shows menu 'flashing' for a moment,