Table cell can't be clicked after removed table header On IE10

Steps to reproduce:

1. Create a new page on IE 10
2. Add a table with e.g. 3 columns and 2 rows
3. The first row is a header row with a grey colour
4. Now click on the Header row button so that the grey colour is removed
   

End result:
The cursor jumps to the last column in the first row but is blocked. You can't move it or type anything

Workaround
Click on the page title to 'activate' the cursor again.