We’ve encountered an issue where a customEditor on the spareRow does not get loaded properly when using hot.loadData(data) during update. But if we re-create (destroy then create) the handsontable first before the hot.loadData(data), it works fine.
Here’s a snippet of the issue
The thing encircled in red is our custom editor. When opened, we won’t be able to close it and the data doesn’t get captured unless we re-recreate (destroy then create) the handsontable first.