Looks like alec is aware of this issue:

http://www.tinymce.com/develop/bugtracker_view.php?id=4306

That's him on the picture, right? ;-))

On Thu, May 3, 2012 at 11:20 AM, Thomas Bruederli <thomas@roundcube.net> wrote:
On Thu, May 3, 2012 at 10:52 AM, Claudio Kuenzler
<ck@claudiokuenzler.com> wrote:
> Alright, I installed latest SVN of the 0.7 branch as well and now the
> compose fields are correctly shown in Opera.
>
> I confirm the bug, the html editor seems to freeze after several
> copy+pastes.
>
> Furthermore, if you START the message with a copy+paste, the editor freezes
> immediately, you can't even enter any text anymore.

We should look into the bug reports of TinyMCE for this. From the
Roundcube side there's probably not much to do to solve this issue.

~Thomas
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