A VeraCrypt volume resides on a device/filesystem that utilizes a wear-leveling mechanism (e.g. a flash-memory SSD or USB flash drive). A copy of (a fragment of) the VeraCrypt volume may remain on the device. Therefore, do not store hidden volumes on such devices/filesystems.
I understand that page is a bit dense, so I'm quoting the relevant text from the above source.




I was pro for a long time until I read Nassim Taleb on the tail risk associated with nuclear power.
Look at Fukushima.
Look at nuclear power plants becoming targets in war.
Look at how the capitalists who will be running these things treat risk generally.
There are better options available.