Table Editor is completely messed up…

A. I can insert a table into a document.
B. I can edit the number of rows and columns using the table pallet.
C. If I attempt to insert my text cursor in a cell, the cursor goes into the cell directly above.
D. I can use the arrow keys to navigate from cell to cell vertically, or from char to char horizontally, but I can not select the text of a cell as this involves positioning the cursor and dragging within a cell (see item C. above).

None of the above problems occur in any other application (Numbers, Word, Excel, etc.)