Editing Autofill entries are not saved. Creates a blank entry

[srirambv]

Did you search for similar issues before submitting this one?
Yes

Describe the issue you encountered:
Editing Autofill entries are not saved. Creates a blank entry. Also the entry modal is not center aligned. Always on the left.
Same issue with editing and saving Credit Card info

Expected behavior:
Should save the newly added/removed entries

• Platform (Win7, 8, 10? macOS? Linux distro?):
  Windows 10 x64
• Brave Version:
  0.11.6 Beta 3
• Steps to reproduce:
  1. Do a clean install of 0.11.6 Beta 3
  2. Click on Manage auto fill and enter only name and save
  3. Edit the entry and open a new tab. All changes made to the entry is gone and shows a blank entry
     1. Add credit card details. Edit the details and save changes
     2. Navigating a new tab clears all edited info added for credit card.
• Screenshot if needed:
  
• Any related issues:

[srirambv]

cc: @darkdh