delphi - cxGrid will not scroll upwards -

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i have encountered strange issue cxgrid. after executing query fetch records, records show in grid. simple query:

'select * mytable order name asc'

however,if try , select first record in grid,the grid jumps random record in middle of grid. can not scroll first record in grid 1 grid jumps to. however, beyond record can scroll , down. can not scroll middle upwards nor can select record on there. seems grid stuck on middle record.

if change datacontroller

gridmode = true

then can scroll without problem loose functionality of grid. not dataset issue when replace grid normal grid scrolling functional.

so wondering if bug of sort or setting in grid turned on/off accident.

ps. findpanel visible.

in case helps, below code , dfm of minimalist cxgrid project works fine me , doesn't show behaviour describe. if works you, too, perhaps identify difference in project causing problem.

code:

type   tform1 = class(tform)     cds1: tclientdataset;     datasource1: tdatasource;     cxgrid1dbtableview1: tcxgriddbtableview;     cxgrid1level1: tcxgridlevel;     cxgrid1: tcxgrid;     cds1id: tintegerfield;     cds1name: tstringfield;     cxgrid1dbtableview1id: tcxgriddbcolumn;     cxgrid1dbtableview1name: tcxgriddbcolumn;     procedure formcreate(sender: tobject);   private     { private declarations }   protected   public     { public declarations }   end;  var   form1: tform1;  implementation  {$r *.dfm}  procedure tform1.formcreate(sender: tobject); var   i,   j,   id : integer;   name : string; begin   cds1.createdataset;   := 1 26 begin     j:= 1 26 begin       id := * j;       name := chr(ord('a') + - 1) + chr(ord('a') + j - 1);       cds1.insertrecord([id, name]);     end;   end;   cds1.first;   caption := inttostr(cds1.recordcount);   cxgrid1dbtableview1.datacontroller.filter.beginupdate;   try    cxgrid1dbtableview1.datacontroller.filter.root.additem(cxgrid1dbtableview1name, folike, '%a', '%a');     cxgrid1dbtableview1.datacontroller.filter.endupdate;    cxgrid1dbtableview1.datacontroller.filter.active := true;   end; end;

dfm:

object form1: tform1   left = 259   top = 103   autoscroll = false   caption = 'form1'   clientheight = 314   clientwidth = 444   color = clbtnface   font.charset = default_charset   font.color = clwindowtext   font.height = -11   font.name = 'ms sans serif'   font.style = []   oldcreateorder = false   position = poscreencenter   scaled = false   oncreate = formcreate   pixelsperinch = 96   textheight = 13   object cxgrid1: tcxgrid     left = 0     top = 0     width = 444     height = 314     align = alclient     taborder = 0     object cxgrid1dbtableview1: tcxgriddbtableview       navigator.buttons.custombuttons = <>       datacontroller.datasource = datasource1       datacontroller.keyfieldnames = 'id'       datacontroller.summary.defaultgroupsummaryitems = <>       datacontroller.summary.footersummaryitems = <>       datacontroller.summary.summarygroups = <>       filterrow.visible = true       optionsview.groupbybox = false       object cxgrid1dbtableview1id: tcxgriddbcolumn         databinding.fieldname = 'id'       end       object cxgrid1dbtableview1name: tcxgriddbcolumn         databinding.fieldname = 'name'       end     end     object cxgrid1level1: tcxgridlevel       gridview = cxgrid1dbtableview1     end   end   object cds1: tclientdataset     aggregates = <>     indexfieldnames = 'name'     params = <>     left = 16     top = 24     object cds1id: tintegerfield       fieldname = 'id'     end     object cds1name: tstringfield       fieldname = 'name'       size = 40     end   end   object datasource1: tdatasource     dataset = cds1     left = 56     top = 24   end end

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