Dynamic filters not considered while still loading data grid

[sss6]

Comparison filter on datagrid is not considered while still loading/refreshing datagrid.

Empty comparison filter shows all although for none of the rows the attribute is empty

Our full datagrid takes 1-2 seconds, so when starting users have to wait 1-2 sec till empty comparison is done showing all rows
When user then enters a value comparison filters delivers results very fast.
But then when user replaces value by another by clearing and entering new value we have troubles

Clear causes data grid refresh to show all rows again, but user meanwhile already entered new value then there is no comparison done on new value, new value is simply ignored.

Think when empty comparison would deliver empty datagrid fast it would solve current misery
Alternatively when search only fired on Enter it would probably also solve it