I have a textbox for which i have applied the css. On Mouse enter i am increasing the font size. When font size is increased , i am double clicking on the content, so that contents gets selected. But the first few characters gets scrolled. I have attached the testcase & screen shot.

Step to reproduce:-
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1) Run the attached testcase.
2) select editable & attach stylesheet checkbox.
3) Move the mouse pointer into the textbox. Font of the textbox increases.
4) double click on the contents & move the mouse outside the textbox.. Observe that first few characters gets scrolled or hidden. If you see the same, then bug is reproduced.