You can sort in ascending and descending order any column in any table by clicking the header of that column.
But what if this doesn't sort correctly?
In fact it probably is working properly but you've just clicked other columns too and the sort logic has built up across multiple columns. The way column sorting works is each time a header is clicked it cycles between: sort ascending; sort descending, sort off.
Click once and the up arrow appears:
Click again and the down arrow appears:
Click a third time and the sort clears:
After clicking lots of different headers the sort filters can build up and make it look like the columns are behaving strangely.
If this happens please click the headers until they cycle back to a 'sort off' state.
Hopefully now your columns will behave themselves.