GNS 530 OBS button in mandatory approach holding patters not

Question to this video  at time stamp 14:41 when pressing the OBS button:

This works in fact in the original (NON-X-Plane)  Garmin530 simulator used in the video. But did someone try this in x-plane,  with the x-plane stock - 530 (with stock Cessna 172) ?
I tried, but the OBS button does not work in this exact situation. When you are inbound the OXJEF- fix of the hold, the OBS button is simply ignored and NO "SUSP" shows up, and therefore the sequencing continues to the next fix after the holding fix. 

Same problem with this situation 

and the OBS/SUSP Button not working in X-Planes 530 

Is this a bug in X-Plane , or simply a not implemented feature ? 

Bodo