In the 0.46 experimental build currently running the propane style lamps are not appearing in the vicinity window. I was able to pick the lamp up and put it back down onto the ground but would not appear in the vicinity window despite looking right at it and changing postures to test whether it would appear. This has occurred in different buildings so it seems not due to the item being in the floor. This is the unattached lamp, I have not been able to test with a lamp with propane attached.