The scroll bar problem is a known bug for a very long time (it appears even in RadEditor Classic) and we have spend an enourmous amount of time to investigate all potential reasons for it like browser settings, plug-ins, add-ons, CSS styles, the hasLayout feature
The main problem here is that the scroller issue appears sporadically on certain machines and it cannot be reproduced in reliable manner and isolated so that we can fix it once and for all. That is why all help on reproducing this browser bug that applies to editable iframe elements will be greatly appreciated.
In order to be able to reproduce the problem, we need detailed information as the following one:
- a simple working project along with all related files for the problem reproductions like: CSS, scripts, server controls, content, etc
- a live URL to the problematic page with RadEditor
- reliable steps to reproduce the problem (if possible use Jing or another screen recorder to capture them)
- any additional information that you think might be helpful
the Telerik team