Steps to reproduce:

1. Create a page in IE 11.
2. Insert Table and type something in the first column.
3. Press tab to go to the next column.
4. Type something.

Actual Behavior:

Column doesn't show anything while you are on the edit mode. It shows the text when you save the page.

Expected Behavior:

It should shows the text.

Workaround:

Click somewhere out of the table and start typing.
or
use backspace or delete after using tab and start typing.

Notes

Re-editing the page does not have this issue, cells can be used without error.