The [End] key behaves strangely if there is at least one trailing blank. The cursor jumps back and forth across the trailing blank(s). E.g.

Steps:
 1. Type in the following:

    The quick brown fox jumps over the lazy dog.

 2. Press either [Space] or [Tab] to add a trailing blank.
 3. Press the [End] key a couple of times.

Actual results:
The cursor jumps back and forth across the trailing blank.

Expected results:
It shouldn't. Pressing the [End] key when the cursor is already in the last position should just do nothing.

Version details:
gtksourceview 1.4.2
gedit 2.12.1