Liquid Pipe Thermo Sensor doesn't work when off screen

I've experienced this bug multiple times as well (with BUILD: RP-383949). Everytime experiencing this, I have to click on the sensor, so it will start updating its signal again. 

You can see in the images attached. The way I reproduce this bug is:

1. First set the sensor to a threshold that will send green signal
2. Move the screen to somewhere else, wait for some time (at this time, the liquid will be cooled to way below the threshold)
3. Getting the screen back to the sensor, and captued the images below
4. The sensor is still sending green signal (until i click on it)

I use no mods at all, so I believe this is not an issue related to any mods.

Update: it seems this bug not only happens when off screen. I can reproduce this bug with the sensor within my screen.

The way I reproduce this bug is:

1. The liquid originally flowing is below -250C, while the sensor is showing red signal
2. So i click on the sensor, it updates its status, now showing green signal (and as a consequence, the thermo aquainter starts working)
3. After a while, the liquid goes below -250C (it's -256.3C as you can see in the image), while it is still sending green signal

I also follow-up by:

1. Wait for a long time, the sensor still does not update itself, the liquid is now -270C
2. click on the sensor again, it now turns to red signal