I am creating this blog as we are getting reports repeatedly about this issue .It is also reported in Scrolling upwards when typing a reply in editor.
This issue is a known bug and been reported to Jive as well as chrome.It is a latest version chrome bug and has to be fixed by chrome.
1)Use Advanced editor
2)Please use other browsers if it is too annoying (We are expecting it will be fixed shortly by chrome)
3)within Chrome, after pasting anything press page up and page down like 2 times.(workaround provided by Jive)