Hello,
In phppgadmin interface, in select view, when we click on title of colomn to group data (or click on number of page), we are redirect on table view.
To reproduce this issue, we select database, in Table view, we chose an table and click on "select" button, we select some colomn, put a value in text box and click in "select" button.
This problem is with 5.1 version. We downgraded phppgadmin in 4.2.3 version (we keep the same configuration file) and it's OK, we havn't the problème with 4.2.3 version.
(sorry if there are mistakes, i'm french :-) )
TLG