Sort by Date in search not working

Hi

I wanted to order my search result by date but it is not possible.

When i click the table header a progressbar is shown but the resultset is still the same.

Any ideas?

Thanks

WebApp: 3.4.11.1344+766.1
Kopano Core: 8.5.81
Z-Push: 2.3.9

@klipp

Thanks for reporting.
Made ticket https://jira.kopano.io/browse/KW-2501