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There is an issue with UniDBGrid when user clicks on first row. First BeforeScroll event of Dataset occurs, then AfterScroll event happens. Again BeforeScroll happens but AfterScroll does not happen. This cause some issues, as I close some dataset on beforescroll and open them afterscroll. Steps to reproduce: Click on a row in grid other than First row Now, Click on first row Before scroll event happens After scroll event happens Before scroll event happens The issue is After scroll event does not happen after second Beforescroll event I analyzed the uniDBGrid.pas code and believe it is related to following two lines. DD.First; DD.MoveBy(ARecNo); Could you please add following if condition? This way, DD.MoveBy(0) is not called. Hence, the extra call for Before scroll does not happen. uni-18.104.22.1689 Thanks.