Block Regions: Issue with saving content/ordering

Runway 2.8.2

We've noticed that, when you add content to block regions, it doesn't always save your order. This happens not necessarily the first time only; happened a few times; and also changes the order of blocks sometimes on save.

This obviously creates issues for us and for our clients. Is this something you are aware of and, if so, is there a resolution?

Thanks.

Diagnostic Report

Perch Runway: 2.8.2
Production mode: Production (100)
Installed apps: content (2.8.2), assets (2.8.2), categories (2.8.2)
DB driver: PDO
DB tables: perch2_backup_plans, perch2_backup_resources, perch2_backup_runs, perch2_categories, perch2_category_counts, perch2_category_sets, perch2_collection_index, perch2_collection_items, perch2_collection_revisions, perch2_collections, perch2_content_index, perch2_content_items, perch2_content_regions, perch2_navigation, perch2_navigation_pages, perch2_page_routes, perch2_page_templates, perch2_pages, perch2_resource_tags, perch2_resources, perch2_resources_to_tags, perch2_settings, perch2_user_privileges, perch2_user_role_privileges, perch2_user_roles, perch2_users
Users: 3
App runtimes:
<?php
    $apps_list = array(
        'content', 
        'categories',
    );
Editor plug-ins: markitup
H1: 03a10fcf7fb66498b037a9d6b5334f1a
L1: a25b7eab6fec5c4abbec6d16853d868f
headerColour: rgb(54,54,54)
content_singlePageEdit: 1
helpURL:
siteURL: /
hideBranding: 0
content_collapseList: 1
lang: en-gb
update_2.8.2: done
headerScheme: dark
latest_version: 2.8
on_sale_version: 2.8.4
PERCH_DEVELOPMENT: 10
PERCH_STAGING: 50
PERCH_PRODUCTION: 100
PERCH_SITEPATH: /Applications/MAMP/htdocs/2015/CTC/app
PERCH_SCHEDULE_SECRET: xxxxxxxx
PERCH_DB_USERNAME: xxxxxxx
PERCH_DB_SERVER: xxxxxxxx
PERCH_DB_DATABASE: xxxxxxxx
PERCH_DB_PREFIX: perch2_
PERCH_EMAIL_FROM:xxxxxx
PERCH_EMAIL_FROM_NAME: xxxxxx
PERCH_LOGINPATH: /perch
PERCH_PATH: /Users/christina/Sites/ctc/app/perch
PERCH_CORE: /Users/christina/Sites/ctc/app/perch/core
PERCH_RESFILEPATH: /Users/christina/Sites/ctc/app/perch/resources
PERCH_RESPATH: /perch/resources
PERCH_HTML5: 1
PERCH_TZ: UTC
PERCH_RUNWAY: 1
PERCH_ERROR_MODE: DIE
PERCH_DATE_LONG: %d %B %Y
PERCH_DATE_SHORT: %d %b %Y
PERCH_TIME_SHORT: %H:%M
PERCH_TIME_LONG: %H:%M:%S
PERCH_DEBUG:
PERCH_PREVIEW_ARG: preview
PERCH_TEMPLATE_PATH: /Users/christina/Sites/ctc/app/perch/templates
PERCH_DEFAULT_DOC: index.php
PERCH_DEFAULT_EXT: .php
PERCH_PRODUCTION_MODE: 100
PERCH_RWD:
PERCH_HTML_ENTITIES:
PERCH_SSL:
PERCH_STRIPSLASHES:
PERCH_PROGRESSIVE_FLUSH: 1
PERCH_AUTH_PLUGIN:
PERCH_DB_CHARSET: utf8
PERCH_DB_PORT:
PERCH_DB_SOCKET:
HOSTING SETTINGS

PHP: 5.6.2
Zend: 2.6.0
OS: Darwin
SAPI: apache2handler
Safe mode: not detected
MySQL client: 5.5.38
MySQL server: 5.1.47-log
Extensions: Core, date, ereg, libxml, openssl, pcre, sqlite3, zlib, bcmath, bz2, calendar, ctype, curl, dom, hash, fileinfo, filter, ftp, gd, SPL, iconv, intl, json, ldap, mbstring, mysql, mysqli, session, PDO, pdo_sqlite, standard, posix, Reflection, Phar, SimpleXML, soap, sockets, exif, tokenizer, wddx, xml, xmlreader, xmlwriter, xsl, zip, apache2handler, imap, gettext, mcrypt, yaz, pgsql, pdo_pgsql, pdo_mysql, ionCube Loader
GD: Yes
ImageMagick: No
PHP max upload size: 32M
PHP max form post size: 32M
PHP memory limit: 128M
Total max uploadable file size: 32M
Resource folder writeable: Yes
Session timeout: 24 minutes
Native JSON: Yes
Filter functions: Yes
Transliteration functions: Yes
HTTP_HOST: ctc.localhost
HTTP_CONNECTION: keep-alive
HTTP_ACCEPT: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
HTTP_USER_AGENT: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36
HTTP_DNT: 1
HTTP_REFERER: https://ctc.localhost/perch/core/settings/diagnostics/
HTTP_ACCEPT_ENCODING: gzip, deflate, sdch
HTTP_ACCEPT_LANGUAGE: en-GB,en;q=0.8,en-US;q=0.6,bg;q=0.4,ru;q=0.2
HTTP_COOKIE: cmsa=1; PHPSESSID=4869c408ea99d25912fade84079770f2; _ga=GA1.2.1883751300.1426860156; _gat=1
PATH: /usr/bin:/bin:/usr/sbin:/sbin
SERVER_SOFTWARE: Apache
SERVER_NAME: ctc.localhost
SERVER_ADDR: 127.0.0.1
SERVER_PORT: 80
REMOTE_ADDR: 127.0.0.1
DOCUMENT_ROOT: /Users/christina/Sites/ctc/app
SERVER_ADMIN: you@example.com
SCRIPT_FILENAME: /Users/christina/Sites/ctc/app/perch/core/settings/diagnostics/index.php
REMOTE_PORT: 53579
GATEWAY_INTERFACE: CGI/1.1
SERVER_PROTOCOL: HTTP/1.1
REQUEST_METHOD: GET
QUERY_STRING: extended
REQUEST_URI: /perch/core/settings/diagnostics/?extended
SCRIPT_NAME: /perch/core/settings/diagnostics/index.php
PHP_SELF: /perch/core/settings/diagnostics/index.php
REQUEST_TIME_FLOAT: 1427111382.72
REQUEST_TIME: 1427111382
argc: 1