PVR group cannot be selected via JSON RPC

[pr11me]

On my remote I am using separate buttons to open the EPG on a specific channel group. I am using the JSONRPC API (via Home Assistant). You can reproduce with:

curl -s --data-binary '{"jsonrpc": "2.0", "method": "Gui.ActivateWindow", "params": {"window" : "tvguide", "parameters": ["pvr://channels/tv/<a channel group name>"]} }' -H 'content-type: application/json;' -u "user:password" <kodi host>/jsonrpc | jq .

I works with e.g. Estuary or Embuary but with this skin, no matter which channel group parameter is given, the channel group which was selected via the GUI (e.g. the horizontal "slider" type menu above the grid) is opened. It seems the skin somehow overrides the API or something.