Table UI won't start dispay at 1st row after reloading it

Question

Hello,
I have a table UI element in my Web Dynpro app. The user enters some search data, I perform some logic based on that and that results in a new set of data.
I populate the table with the new data and set the leadSelection to -1.
The table is in a ScrollContainer with scrolling set to auto so I can have vertical scroll bars.
However the table doesn't start the display with row 1 but with whatever row it was on before. In other words, let's say my original list contained 50 rows and I had scrolled down to row 15. Then the next result list contains 35 rows. When it displays the table it still starts with row 15.
Not sure if it's important but the properties of the table are set to have VisibleRowCount of -1 and FooterVisible to false. I had to do this in order to hide the navigation button bar at the bottom of the table.
Has someone seen this before? If so, can you please tell me how to fix it?
Any help would be greatly appreciated

Answer 1

Thanks all for your replies. Sorry for my confusion about the initial reply.
I have tried (I believe) all the suggested 'fixes' with no luck. At the bottom of this entry are the current properties of the table.
In the onAction method that is executed when I do my search I have the following at the end:
if (wdContext.nodeObj_types_output().size() == 0) {
  wdContext.nodeObj_types_output().setLeadSelection(-1);
} else {
  wdContext.nodeObj_types_output().setLeadSelection(0);
wdContext.currentContextElement().setFirstVisibleRow(0);
<b>The table properties</b> (if property is not listed it has no value) are as follows:
compatibilityMode - auto
dataSource - Obj_types_output (node in Context Model Node bound to RFC model)
design -standard
enabled - true
firstVisibleRow - firstVisibleRow (context Value Attribute of type integer)
fixedTableLayout - false
footerVisible - false
gridMode - both
id - ObjectTypes
readOnly - false
rowSelectable - true
scrollableColCount - -1
selectionChangeBehaviour - auto
selectionMode - auto
visible - visible
visibleRowCount - -1
onLeadSelect - ObjectSelect