Available Patch Panel Ports not correct

[rasssta]

Hello!

For one of my PPs, it says "5/6 11/12" available in the PP overview. In this PP I have 2 ports (=1 duplex) assigned to a customer. My understanding is that it should say "5/6 10/12" then. (I have this problem for other PPs as well but this is the easiest example of them.)

DB:
MariaDB [ixpng]> select * from patch_panel_port where id='3' OR id='4'\G;
*************************** 1. row ***************************
id: 3
switch_port_id: 542
patch_panel_id: 1
customer_id: 5
duplex_master_id: NULL
description:
number: 3
state: 3
colo_circuit_ref: NULL
ticket_ref: NULL
notes:
private_notes:
assigned_at: 2017-10-04
connected_at: 2017-10-04
cease_requested_at: NULL
ceased_at: NULL
last_state_change: 2017-10-04
internal_use: 0
chargeable: 2
owned_by: 4
loa_code: cG1i2ddW8AMGZtGir5hoj8LBY
*************************** 2. row ***************************
id: 4
switch_port_id: NULL
patch_panel_id: 1
customer_id: NULL
duplex_master_id: 3
description:
number: 4
state: 1
colo_circuit_ref:
ticket_ref:
notes:
private_notes:
assigned_at: NULL
connected_at: NULL
cease_requested_at: NULL
ceased_at: NULL
last_state_change: 2017-10-04
internal_use: 0
chargeable: 0
owned_by: 1
loa_code:
2 rows in set (0.00 sec)

[rasssta]

I should add that I had the same behavior in 4.5.0

[rasssta]

\o/