The destroy function on jqxPopover does not remove the callbacks the popover installed on the selector element and the document. This can be seen in the demo example at https://www.jseditor.io/?key=jqwidgets-popover-methods using the Chrome inspector. After clicking the “Destroy” button, jqxPopover callbacks are still present on the “Click me to Toggle Popover” button and the document.
After use ‘destroy’ method the jqxPopOver the the “Click me to Toggle Popover” button is still there.
But there no appear error because is not attach any functionality on that button.
Please take a look this example: https://www.jseditor.io/?key=jqwidgets-popover-check-destroy