I know this is very small issue but this can be overcome.
Suppose I have placed my cusror in a cell and then i switch to another programme (say excel) to look at the data I have to feed in that cell, the cell deactivate itself and I once again use mouse and click in that cell for typing.
This may be one of those fundamental Mac/Windows differences. Whatever one does, the other does the opposite. I’ve encountered such differences before.