Can't copy & paste data in a spreadsheet

Hello Nextcloud Community,

I am facing an issue with an Excel file that i uploaded.
I can only paste data into it that are in a row. If I try to copy data that are above columns, i am not able to paste it in. I tried several browsers thinking there was the problem but same situation on IE Edge Firefox and Chrome.

Is this a known issue with Nextcloud or is this a secruity option ?

I have this issue too, additional to that, if I am using a mobile client, I canโ€™t copy anything at all.