Which is the browser under which the problems exist?
Do you use DIV content area mode (ContentAreaMode="Div" or the default IFRAME one?
It is expected to resize the DIV content area when pasting some long incessant text, because this is how the browser behaves. The solution is to apply width to the DIV element:
It is a problem that the Design and HTML buttons go away. Unfortunately, I was unable to reproduce this problem in the online demos of RadEditor. Is it possible to provide a simple demo in a support ticket so that I can investigate the problem? Please, include sample HTML content for paste.
All the best,
the Telerik team
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