You are editing a draft message isn't persistent

Hi,

When editing a region, 'Save as draft' doesn't remain checked after the first save, and the 'You are editing a draft' message isn't shown (or persistent) until 'Save as draft' is checked again and 'Save changes' is clicked.

After the first save, there's no indication the region is in draft mode. You have to check 'Save as draft' again to make it show the 'You are editing a draft' message and related icons.

Once the 'Save as draft' checkbox is ticked I'd expect it to remain ticked until the user unticks it.

Here's a screencast showing the issue:

Perch Runway: 3.0.14, PHP: 7.2.1, MySQL: mysqlnd 5.0.12-dev - 20150407 - $Id: b396954eeb2d1d9ed7902b8bae237b287f21ad9e $, with PDO
Server OS: Darwin, cgi-fcgi
Installed apps: content (3.0.14), assets (3.0.14), categories (3.0.14), perch_forms (1.10)
App runtimes: <?php $apps_list = array( 'perch_forms', );
PERCH_LOGINPATH: /perch
PERCH_PATH: /Users/stephen/Repositories/my-site/perch
PERCH_CORE: /Users/stephen/Repositories/my-site/perch/core
PERCH_RESFILEPATH: /Users/stephen/Repositories/my-site/perch/resources
Image manipulation: GD
PHP limits: Max upload 32M, Max POST 8M, Memory: 128M, Total max file upload: 8M
F1: 3b606135b33e6a102526838f4152a807
Resource folder writeable: Yes
SCRIPT_NAME: /perch/core/settings/diagnostics/index.php
REQUEST_URI: /perch/core/settings/diagnostics/
DOCUMENT_ROOT: /Users/stephen/Repositories/my-site
HTTP_HOST: my-site.test