Would you please check whether you have set the PersistScrollPosition
of the pane to true and if not - set it and test again?
If this des not help I am not sure what causes this problem and what I can assume without having your code is that you are using AJAX and this is the reason for the issue. Losing the scroll position is a general problem when using AJAX and it is not directly related to RadControls. You can test my assumption by disabling AJAX in your demo for test purposes and check whether the problem disappears.
If my assumption is correct what I suggest is to save the scroll position before the AJAX update e.g in a hidden field and when the content is loaded to reset it back. You can find more information about this and also other techniques on how to persists the scroll position on the net, e.g you can start from here:
If my assumptions and suggestions do not help I will really need to examine a sample fully runnable reproduction demo (you can use a fake programmatic datasource for the grid) - please open a new support ticket and send me such along with detailed reproduction steps and I will do my best to help.
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