I have added a text area to a frame and I am adding some empty new lines to the text area by pressing 'ENTER' key. On one of the lines (in the middle), I am double clicking the mouse and i am surprised to see the blinking cursor enlarging to the height of 2 lines - the current line + the previous line and half of the cursor is actually blinking.

This is reproducible only on XToolkit since Tiger and not reproducible on Motif, Win32. This is reproducible only when double clicking a new line. I reproduced it on SolSparc10-JDS.

I have attached a sample test. Run the sample test on XToolkit. Press 'ENTER' and add few new lines to the text area. Double-click slowly on one of the lines in the middle. You will see the cursor on both the lines at the begining of the line.