No Confirmation callback reported after indication from Server and broken release support for Cypress Pioneer BLE-WiFi kit

Hello all,

I have been trying to bring-up the mbed-os-example-ble-GattServer BLE application on the Cypress Pioneer BLE-WiFi kit.
From the online IDE, switching between different releases. I concluded that the app works fine till Release 5.14.1.
From release 5.14.2 and later, the server does not send data (though the gatt.write returns success).
Also in former versions, the server sends indications (OnDataSent callback is called), but there is NO confirmation reported through onConfirmationReceived callback.
I’m sure the client sends confirmation as the server can not send a second indication before it receives the confirmation for the first one.
Any ideas ?