Liquids or gases in pipes can have the tempature start randomly dropping for no reason, leading to repeated cold damage

Please include save

Here's a save. You can see that the small unit of hydrogen in the abyssalite pipe is at like -6c.

This is due to the bug. Nothing around it is that temperature and gas in insulated abyssalite pipes shouldn't be changing temperature anyway.

bugreport Cycle 4.sav

I've had it happen a few times to me so I am confirming the bug exists. I am not sure how it is reproduced.

A couple days ago I had a pipe in my water filter setup randomly break just after the cycle save. I reloaded the save and the pipe didn't break.

I confirm this bug. Happens extremely frequent in debug mode. 

 

I can now reproduce this reliably:

 

30 minutes ago, paulcdejean said:

I can now reproduce this reliably:

 

You may want to repost it as a new bug report for more visibility.

Will mixing normal + insulated pipes or making pipes using different materials make them bugged?

I think that is the right question.

Edited April 4, 2018 by Arash70