#7 Locate caret error, and new input text can't display

[steveneo]

A example Html text:
<h3>H3 Content<BR></h3>

Do follow step:
1.Delete some text from H3 node.
2.Input some text into H3 node border position. (can't
insert text into middle text of H3).
3.Delete all text in H3 Node.

When input new text in empty H3 position, no any text
display, and follow error show:

[11:55:34.961] [ERROR]: caretLineCharIdx has wrong
value-1 [TextNode.locateCaret
]:
[11:55:34.961] [ERROR]: Can't restore caret
location:asdfs [ LINENO: -1] [TextNo
de.restoreCaret]: