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.