SyntaxEditor Cut command for a lot of line of code hangs out the application.

Hi Vadim,

I wonder if it's the HTML and/or RTF exporters causing the slowdown.  The SyntaxEditor.CanCutCopyDragWithHtml is false by default but the SyntaxEditor.CanCutCopyDragWithRtf property is true by default.  Can you make sure both of those are set false and try with the same file again to see if the copy is quick or not?  Let us know the result.

If not, please ZIP up the file and send it to our support address, referencing this thread and also telling us which syntax language you are using.  Thanks!