WP 2.8 Beta 1: Pasting bug?

Hi,

I’ve been testing WP 2.8 Beta 1 on my local WinXP machine.
When I edit posts in the visual editor, I noticed that when I paste text a character right before the pasting position is being deleted. Always. In the HTML mode exerything works fine.

To reproduce: In the Visual editor type some text. Then copy arbitrary text into clipboard and paste it at the end of the existing text (or at any position in the middle of the existing text).

P.S. My browser is FireFox 3.0.10