Changing a cell, like writing in an empty cell or deleting a cell in a sheet, leads to the same change in all other sheets. This does not apply to modifying already existing contents of a sheet. Basically it means that calc cannot be used.
3.3.4 LO version is quite old, could you try to reproduce this on newer LO version (3.5.6 or 3.6.0)? Which Linux distrib (+version) do you use?
We kept on discussing about this bug with Erik and finally, it was just a mistake about the shortcut to use, here's his last message about it: " Mea culpa, I realise it was my mistake, I should have used Ctrl PgDwn and not Shift Ctrl PgDwn. It works perfectly now. So sorry to have troubled you unnecessarily. And you are welcome to quote my mails, including this apology. " So I put this to RESOLVED/INVALID Thank you Erik for your feedback.