Problem  

Bug ID: 4996542 

The Alt key and Shift key might not function as modifier keys when you use the Internet/Intranet input method. The following problems are known:

• You might not be able to make a selection in a text using the Shift+arrow key combination. Latin characters might be inserted instead.

Solution  

Use a different input method, for example Default.. To switch input methods, right-click on an object and select Input method.