After updating from 2.2.1a to 2.3.1a the time remaining now displays 0:00:00 all the time.

This is a fluid cooled reactor where I'm using one card activated on the inner reactor (to get the fuel time) and one card activated on the casing to get the fluid reactor info.

Before the update the time display worked as expected.

Need more info... possibly pics? Not sure what your setup is, but I just tested this and it works for me

Here, this is me explaining my problem:
https://youtu.be/JG9_TT0Gg3w

Forgot to set the video to unlisted.

Still can't see the video...

This link should work: https://youtu.be/JG9_TT0Gg3w

And there is no voice in the video...
-_-

This works again after updating 2.3.1a => 2.3.3a