Hi Dipendra,
You can Go Settings > Apps > App designer > sitemap designer to edit title, the tooltip will be changed with title vale, which is by-design.


If you want to just edit tooltip but not change title, there is no way to achieve pefectly.
you can only open browser developer tools (Press “F12”) and edit value in each item title attribute, because the tooltip is set in the HTML element's title attribute,


However, the change can’t be save, if you refresh or navigate to other page, change will be reset.
Regards,
Leah Ju
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