Testexecute engine Log are being stored at Recycle bin.
https://support.smartbear.com/testexecute/docs/reference/options/engines/log.html We are kepping the TestExecute engine log - Number of Recent log to Keep = 2. We are running our tests every 30 m...
Normal and in fact very safe.
TestComplete do logs and let you set the number of log kept.
After that it delete them
Trash bin is an OS standard function which is associated with the OS delete file function.
So it's not to TestComplete to infer with OS function.
But you can set the trash bin to the size you want and to effectively remove files immediately.
Simply right click on your trash bin and select Properties ..
