The observed problem is expected to occur when the scenario is configured as in the attached page. Here is why:
When the Window content <div> is appended to the page <body> as a last child and there is not enough room in the currently visible area, the page length increases. The Window receives focus
, which causes the page to scroll to the bottom. Then the center position is calculated and the widget is repositioned, however, when it is moved to the center of the screen, the page length decreases and the Window appears again to be at the bottom. This behavior is not browser-specific.
The focusing is carried out, so that the Window can accept commands from the keyboard
. This is something new, which was not present in the older version that you have been using. With the latest version, you can initialize the Window as hidden (visible:false setting) and then center and open it.
the Telerik team
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