Files remain on the RAM disk after a reboot

Hi,
I cannot understand how this is possible. I have added a RAM disk and configured to store temporary files on it. At first everything worked properly after the restart on the disk to create a folder for temporary files, and they were empty. But recently I found that after turning off and turning on the computer files were left on the RAM disk. I checked the settings and there is not selected disk image file at shutdown.

See this article. It explains what happens and what to do.

Andrew, thank you! You've helped me solve the problem!