The actions should be visible exactly when Open door/Close door appear.
{F86036}
It is particularly noticeable when you step to the left and right of Door 8 of the Industrial Shed Object
Left (>15m)
{F86037}
Right (<15m)
{F86038}
On the big dome, nothing shows since everything is >15m from center
{F86039}
Tested on Dev 1.77.143345 using actionNamedSel from building UA configs