Thanks for your posting and using Aspose.Cells for GridWeb.
We were able to observe this issue and found when culture is changed to french, the column A gets hidden.
We have logged this issue in our database for investigation. We will look into it and fix this issue. Once, the issue is resolved or we have some other update for you, we will let you know asap.
This issue has been logged as
- CELLSNET-43501 - GridWeb component load excel file problem with french culture