We have a content presenter flow, which shows site-studio content. When I go in edit mode, it launches a form which allow me to edit elements of cdf file. I found that I can do Ctrl+v if its a normal text element, but I can't do Ctrl+v if its wysiwyg elements. As a work around I need to right click and select paste on wysiwyg elements. Is this expected behaviour or a bug?
it is expected behaviour and depends on your browser. Chrome and Firefox have a security restriction which disallows pasting clipboard data directly like this.