Hello Vijay,

Thank you for posting to Infragistics Community!

Please, keep in mind that version 9 of Ignite UI for Angular is long out of support and as such, does not receive any bug fixing or development, nor is eligible for developer support services.

The currently supported versions are 15.0.x and 14.2.x.

In an effort to test the reported functionality in a supported version, I went ahead and performed a similar scenario in this demo from the Cell Editing topic in our documentation. As you can see in the below gif, the edited value is kept when clicking outside the edited cell:

Additionally, could you please clarify what is the element that the “decimal” and “showTrailingZeros” properties are set on? As these were not properties of IgxColumnComponent neither in version 9, nor the current, is it possible that you are applying a cell editing template and defining a custom cell editor?

I am asking this, as it is possible that such an issue occurs in case the editor is not properly bound to the cell’s editValue property, for instance:

<ng-template igxCellEditor let-cell="cell" let-value>
        <input [(ngModel)]="cell.editValue" type=”text” />
</ng-template>

If you require any further assistance on the matter, please, let me know.

Best regards,
Bozhidara Pachilova
Associate Software Developer