Sorting by clicking on a column header often works when the order is ascending, but it never works with descending order. In fact, descending order seems to equal "No sorting", the option I once requested in order to preserve the order of records in the .bib file. This problem also applies to the online search results pane.

Reproducible: Always

Steps to Reproduce:
1.Click on a column header to change the sorting order.

Actual Results:  
Choosing ascending order sometimes does not work, but quite often it works normally. Choosing descending order never works.

Expected Results:  
Selecting descending order should sort the column accordingly.