Chart with shared tooltip enabled throws an error #7982
Description
Bug report
When 'shared' tooltip is enabled (tooltip: {shared: true}) keyboard navigation through chart triggers JavaScript error and tooltip on focus is not shown, neither shared nor regular tooltip. It works without issues when 'shared' is disabled, but when it is enabled errors are triggered.
Reproduction of the problem
Open Dojo example https://dojo.telerik.com/@[email protected]/UqixUyuj
Open browser's console (F12)
Run the script
With mouse click on "India" legend item once -> India line is disabled
Click on "India" legend item once more -> India line is enabled
Using keyboard hit Shift+Tab -> Browser's console shows error: "Uncaught TypeError: Cannot read properties of undefined (reading 'format')"
Using keyboard hit Tab -> Dot on chart line becomes highlighted but no tooltip is shown
Stack trace of the issue:
Expected/desired behavior
No error shall be thrown
Ticket ID: 1665060
Environment
jQuery: 3.4.1
Kendo UI version: 2024.3.806
Browser: [all ]