OS: Windows 10 - 64-bit
Effect: Similarity value is 0
To reproduce:
- Tools - Search similar files - Similar files content
- Normally, the similarity is 100
- When you use date sorting, it becomes 0   
It is highly recommended
- Allows multiple folders to be selected at the same time. 
Currently, only one can be selected. It would be more cumbersome if I just wanted to compare a part of folders.
 Many add folders button have this problem. Such as in Batch Convert, Join Images.
- Allows me to drag files/folders into the list. Can't drag at the moment, it's cumbersome to specify a file.


 Thanks to your detailed description I can reproduce
  Thanks to your detailed description I can reproduce