Folders and dll's in Temp folder are not cleaned up

I am running an unattended robot. The robot itself is running fine, but I noticed that a lot of folders and dll’s are getting created in the folder %USERPROFILE%\AppData\Local\Temp during execution of an automation.

The problem is that these files and folders are not removed after the automation has finished, which leads to a disk that is running out of space.

Does anyone know what the issue here might be?