Files will be overwritten after renaming without asking user for permission.
Steps to reproduce:
You habe 3 files in a folder:
1. test1.txt
2. test2.txt
3. total_different.txt
test1.txt + test2.txt are equal.
Duplicate Cleaner will find a duplicate (of cource test1.txt and test2.txt). If you rename e.g. test1.txt (right click -> "Rename File...") to total_different.txt then the original file (total_different.txt) will be overwritten.
Tested version: v1.3.2