[DevonDancer]

I have a G21 with iDrive 7 that is just over 1 year old.
I have been using the Route Magnet facility regularly but in the last month or so it has stopped working.
I can select route magnet from the menu and it displays the message to click or drag but the Magnet symbol is not appearing anymore on the map for me to drag to the desired route.
I still have software version 30/2020.30 so it is not as a result of an upgrade.
I prefer to use route magnet rather than setting an intermediate destination as it displays the time/distance to the final destination rather than time/distance to the intermediate destination.
Anyone else got this problem or know how to get it working again?