Someone suggested something similar, but i havent heard any response nor found it on wiki.
UA container when ejected looks rather like it emanates something. Fog + sparkling.
That looks to me like it is extremely cold.
It would make sense if it is something HIGH tech.
Absolute zero -273.15° Celsius is fairly interesting thing in this regard.
At near this temp (we never really reached it yet) laws of physics get rather wild.
cooled matter gets into fifth state of matter liquids are superfluid (they literary flow out of your container
resistors become
superconductive
...Its rather interesting topic. Worth to read about.
But back to the topic.
Have you tried to Heat it up a lot

near star or just by shooting and having it in cargo hold so it heats up with ship ?
And most importantly
other way around.... it might not be exactly cooled enough.
Have you tried to help it ?
Cool it more - heat sinks and similar?