QWebchannel lost qt.webchannneltransport reference in case of page reload

On app init, a webchannel is associated to a QTWebengine page with new mandatory worlid.

In case of page reloading, the script associated to the page is also reloaded, and a new webchannel is created, unfortunatly as described into the 5.7 code documentaiton the sandbox breaks the existing connection.

As a concequence no more reference in javascript available on qt object.

How to work around this damned functionnality ?

Page Reloading is not compatible with qt webchannel transport on QT5.7, added scripts are not reloaded in the same world or there is no way to reconnect webchannel after reload due to worldid mandatory parameter added in 5.7.

Missing a reload signal to WA ?