The caret goes beyond the end of line, open HiEdit control, type an "a" (or any other character) and press Enter; press Up then Right arrow, watch the caret

Follow these steps to reproduce the bug:

1) Open HiEdit control, type an "a" (or any other character) and press Enter once.
2) Press Up arrow then Right arrow, and watch were the caret goes.

You will see that the caret seems to go beyond the end of line.

Try the same thing with two Enters and this behavior don't happen.

Now, repeat the step 1 with two characters instead of only one, place the caret at the beginning and try to place the caret between them with right arrow.

You will see that it's impossible.

The same sesults can be reached with HiEdit.exe and HiEditDemo.exe.