Motion detector "suspend motion sensor" self-selection is not possible

Earlier (this year, I can’t say exactly when, as I only noticed it now) I was able to deactivate a motion detector for a certain period of time. I did this under Devices --> Control devices.
It is possible that I can still program this, but I can no longer select the motion detector itself, only other motion detectors. This is still possible if there are two motion sensors in one room.
Why can I no longer select the motion sensor myself? Is this intentional or a mistake?