Geofence uploading "not supported" with missionplanner 1.3.41

Hi! I cannot upload geofence to APM2.8 with missionplanner Version 1.3.41;
The message at the screen is “Not supported”.

Previous version of missionplanner 1.3.39 worked very well;
My actual APM2.8 Firmware is arduplane 3.7.1
Why now geofencing not supported?

please update to beta MP. Help > update beta.

OK, thanks Mickael! BetaVersion updated.
It’s running now.