Caret not showing / blinking

[Waxolunist]

You can see that behaviour in the advanced example.

Steps to reproduce:

• Type some text.
• Press the createLink button, enter a link, press Enter (Pressing OK works correctly)
• The caret is on its position but not blinking. If you press a key the caret is moving and blinking again.

Probably the same issue:
Once entered a link, beginning a new line, the caret is not blinking after pressing enter.

And the third one, probably again the same issue:
Type some text, start a bunch of new lines until at the end of the textarea. Type some text, press Enter. The new line is not visible. The scrollable element is not moving. Type some text, the new line is showing.

This all is not happening in the demo: http://edicy.github.io/wysihtml5/

What is different here?