Hi Anass,
In our demo site itself we have
rendered the drop down list in e-range and it renders properly in our end. For your
reference, please find the below links. In this we have rendered the drop down
list in C5 cell.
Sample Link: https://stackblitz.com/edit/angular-zcrrkn?file=main.ts
Demo Link: https://ej2.syncfusion.com/angular/demos/#/bootstrap5/spreadsheet/cell-template
Could you please check the above links
and replicate your issue in the above sample and send back to us? Based
on that we will check and provide you a better solution quickly.
Regards,
Sangeetha M