Steps to reproduce:

1. Create new project
2. Enable VCS (Perforce)
3. Enter something to password field -> field has ******** in it
4. Delete field completely
5. Field still shows up as ******** as if there's something entered in it

I've verified that password is actually deleted by trying to connect to server after deleting that field and as it should - connection failed

Reproduced with: 2017.3.0b4