Steps to reproduce the issue

Create some contacts and assign an Image to the contacts. Create a menu item type "List Contacts in a Category". In Components > Contacts > Options > List Layouts look the parameter "Image", it is set to Show.
Look in frontend the menu item you created and will see that the image column is not present.

Expected result

In frontend the image column is present.

Actual result

In frontend the image column is not present.

System information (as much as possible)

Joomla 3.6.0beta2 fresh new install

Additional comments

If you save the Options, the image column appears, and some other things like contact search filter and number of items to see.