User mentions are now available in Spreadsheet and usable the same way as in Confluence.
Start Typing '@' to display the user searcher. Then type part of a user name to filter results.
Search query is executed on the user full name. The maximum displayed users is 5.
From the user mention popup, you can navigate between results using the mouse or the keys arrow down/up. Hit Enter or left click to select an user.
The render is the same as Confluence in edit or display mode.
Spreadsheet sort/filters can be applied on user mention.
