IE8 - Entering blank cell does not work...

When attempting to edit a cell and clear the data the cell reverts to the previous data.

For example, if Cell 0,0 had the text "ASDF" in it, you double click the cell, delete the contents and press enter, the cell reverts back to "ASDF" instead of being empty.

Not sure if this is just a problem I'm having or if this is a known feature. It only seems to do this with IE8.

After a little more testing i found that if I click at the end of the text (while editing) and backspace until blank, then press enter, it saves correctly. The same goes for the "DELETE" key if i start from the beginning of the text.

However, if i simply double click a cell to edit and then press delete (when all the text is highlighted), it will not save :/.

Any thoughts?