Apps > NTP - can only view up to 50 entries

If I go to the URL: http://librenms/apps/app=ntp

I get to see the first 10 entries (of 200+) - if I try and move to page 2, it says it has, but the data displayed is still that from page 1 (ie entries 1-10)
If I switch to display 25 entries (again of 200+) I see the first 25, if I try and move to page 2, it says it has, but the data displayed is still that from page 1 (ie entries 1-25)
If I switch to display 50 entries (again of 200+) I see the first 50, if I try and move to page 2, it says it has, but the data displayed is still that from page 1 (ie entries 1-50)
If I switch to display “all” - it’s displays none at all…

LibreNMS version 1.58.1-46-ga4c3062aa - Wed Dec 18 2019 10:59:26 GMT+0000

$ ./validate.php

Component Version
LibreNMS 1.58.1-46-ga4c3062aa
DB Schema 2019_04_22_220000_update_route_table (147)
PHP 7.3.12-1+ubuntu18.04.1+deb.sury.org+1
MySQL 10.3.21-MariaDB-1:10.3.21+maria~bionic-log
RRDTool 1.7.0
SNMP NET-SNMP 5.7.3

====================================

[OK] Composer Version: 1.9.1
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct