Well.
I have a Joomla! 2.5.6 installed with latest K2 2.6.1 and the theme is JA Wall.
And here is the sreenshot of the problem. How can you see there is now scrolling at the right, so i can't add any text, pagebrake, reed more ore somthing else. I just can name article, choose the category and save it.
How to solve this problem??? Thanks.