Hey @TianzeWang ,

Unfortunately, this is not natively supported in the Dash Data Table or the AG Grid we support. In the AG-Grid, this is, in theory, available, but only in the enterprise version, which one needs to pay: https://community.plotly.com/t/datatable-or-aggrid-click-drag-for-editing-select/74213/3.

So, unfortunately, the only way to de-select your cell is to refresh your page. This will automatically remove all chart interactions.

Hope that helps 🤞