Mails sort in v17 under buster

[smaugain]

Hi,
I’ve upgrade my Debian server to Buster last week and since, sort mails by any column is now impossible.
I use EGroupware 17.1.20190808 from the Debian package of your repository.
I don’t want to upgrade to v19 before I solve my other upgrade problems.
Thanks
Silvère Maugain

[RalfBecker]

Problem might be, that EGroupware 17.1 never officially supported PHP 7.3 from Buster.

So the 19.1 update coming in a container with PHP 7.3 by default might be your best option.

Ralf