When user.dir is set and a relative folder is created, then io and nio are not in sync on whether the folder exists.
It seems like, the folder is created in “true” user-dir of the process.
Interestingly, io reports that the folder is created - even so, it refers to another place.
I’ve added a test program.

Output without VM params
```
file fileB: ./5726845098406957292
io absolute: /Users/floriankirmaier/projects/workspace/HelloJPro/./5726845098406957292
nio absolute: /Users/floriankirmaier/projects/workspace/HelloJPro/./5726845098406957292
io exists: true
nio exists: true
```


Output with -Duser.dir=<dir>
```
file fileB: ./5717405834156993512
io absolute: /Users/floriankirmaier/projects/workspace/test/./5717405834156993512
nio absolute: /Users/floriankirmaier/projects/workspace/test/./5717405834156993512
io exists: true
nio exists: false
```

Tested on Mac and Windows