Attribute output and last_seen topic

I’ve been using the last_seen topic generated when the output setting is set to attribute, but the topic has suddenly gone awol for all my devices… I cant be sure when this occurred but it seems to be happening on zigbee2mqtt@1.13.1. is it just me ?

hmm i wonder…

@Koenkk - could this be the cause ?

not sure it helps but the following if the output when set to json and attribute. the json contains last_seen but the attributes dont.,

{"current":0,"linkquality":51,"voltage":254.1,"power":0,"state":"ON","elapsed":29754,"device":{"friendlyName":"WashingMachine","model":"HS2SK","ieeeAddr":"0x000d6f000b7a9c6d","networkAddress":63349,"type":"Router","manufacturerID":4619,"manufacturerName":"Heiman","powerSource":"Mains (single phase)","applicationVersion":17,"zclVersion":2,"hardwareVersion":16,"dateCode":"2018.1.11"},"last_seen":"2020-06-15T21:30:17+01:00"}
0
51
254.1
0
ON
29754
WashingMachine
HS2SK
0x000d6f000b7a9c6d
63349
Router
4619
Heiman
Mains (single phase)
17
2
16
2018.1.11