I've experimented with the Word Processor control and searched for posts about it here, and while I'd like to try to use it, I'm disturbed by what appears to be a lack of proper handling of resizing, and also a lack of documentation other than the API, which isn't trivial to map to Razor format.
As far as I can tell, there's some undocumented behavior in the Syncfusion Javascript library handling the controls which detects browser resizing and updates the control, internally. The control does not appear to be able to fit itself inside of a container and then naturally resize itself per the usual expectations via CSS. This is a showstopper problem. What's a clean, documented solution?
Furthermore, the formatting sidebar, fixed to the right and taking up tons of width, is ugly and non-standard. Others have said as much. Why isn't a much more standard and expected second toolbar row used instead?
As well, the existing top toolbar row is excessively large, and not attractive.
It's a shame that a component with so much functionality is undercut by what seem to be easy to fix cosmetic issues by Syncfusion. Any chance that'll happen soon?
When the Word component is placed inside of the right pane of a Splitter control, and the browser window width is dragger wider, the Word window expands, but it never contracts again when the browser window width is dragged narrower again. That's one observed problem.
Another issue is the padding between the content and the container. I don't see a way to control the amount of padding, nor the width of the content "window" itself (I put "window" in quotes because browser debugging does not show a particular DIV for the content.)
I've tried the Rich Text Editor in place of the Word component and both the toolbars and resizing are exactly what I'd expect without some hassle to handle what should already be built-in, so I'll be using that for now - I don't have the time or patience to debug the Word component. I encourage Syncfusion to make improvements to the Word component UI to make it more usable.