Unfortunately I was unable to reproduce the erratic behavior locally. Can you please check whether the example from the following code library thread
works properly on your machine (using editing with popup)? Additionally, verify that the name of the primary key column is added to the DataKeyNames
collection of the MasterTableView as shown in the example.
If the problem seems to be elsewhere, I will appreciate if you outline the differences between the grid configuration from the example and yours. They can lead us to the source of the abnormality to address it accordingly.
the Telerik team
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