Editable Grid - Search then Sort on data

I have a couple of issues with editable grid and am trying to suss out if it is standard or known issue.

1)  When i search on a column header in editable grid which produces a list of record, i cannot sort those records by another column (say date). When i try to sort, it sorts on all the records in that view instead of the records in the column header search that i did. I hope this makes sense.

2) When i try to use the clear button on the column header search, it doesn't clear the header. You have to click away from the header for it to show all the records on that view again.

Many thanks!

J