Rich text control doesn't work in tab container pane. After partial refresh it ends with an error - "k.contentWindow is null". Also it's not possible to create more than one rt control insidetab container - only first one appears.
Below is an example of XPage resulting in such error. After creating a tab with rt control and clicking "partial refresh" error appears. If the tab is closed using X sign, then after trying to create the tab again there is another error - trying to register id which has already been registered.

