Contact form manage display saving but not rendering

contact is a weird beast, it's a hard one to control with DS.

Not sure this should be closed. I have a site where the contact message section under /admin/structure/ds doesn not show up, and I am seeing the same behavior mentioned in this issue:

The other weird thing is in "manage form display" I can see all the fields of the form, name, email address, message. When in the "manage display" tab only the message field is listed.

The only base field showing up under "Manage Display" is the message field.

The Sender's name, The Sender's email, and the Subject fields are NOT visible in the display, but are visible in the manage form display.

Update for anyone who ends up here, installing the Contact Storage module → helps get both of the issues I mentioned in #6 working.

Maybe the maintainers should put a known issue, and reference this so people can find it.
Here also is the stack exchange answer that helped me figure it out.

Documenting it makes sense, will add it to the readme which in the dev version at the moment contains a 'known issues' section!

Added to the README!

Wondering what needs to happen to get the inline and above label positions to work on display?
Right now the output is:

<div class="field field--name-mail field--type-email field--label-inline clearfix">
<div class="field__label">The sender's email</div>