Layout not movable

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- create a layout inside an area.
- create a few blocks in the same area.
Now if you try to drag & drop a layout within this area, the first time it will happen without any problems. If you try to move it a second time, without previously saving the changes, you'll get the following js error in the console:

Uncaught TypeError: Cannot read property 'contendingDragAreas' of undefined

If you got a layout inside another layout, you can't drag & drop the second level layout even once, without getting the error.


Status: New

concrete5 Environment Information

# concrete5 Version
Core Version - 8.2.1
Version Installed - 8.2.1
Database Version - 20170802000000

# concrete5 Packages
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# concrete5 Overrides
blocks/image_slider/templates/slider_benefitblocks/view.php, blocks/image_slider/templates/slider_benefitblocks, blocks/image_slider/templates, blocks/image_slider, blocks/horizontal_rule/view.php, blocks/horizontal_rule, blocks/autonav/templates/flat_navigation/view.css, blocks/autonav/templates/flat_navigation/view.php, blocks/autonav/templates/flat_navigation, blocks/autonav/templates/bootstrap/view.css, blocks/autonav/templates/bootstrap/view.php, blocks/autonav/templates/bootstrap, blocks/autonav/templates, blocks/autonav, elements/header_required.php, elements/footer_required.php, themes/standard/full.php, themes/standard/css/bootstrap-theme.min.css, themes/standard/css/components/image_slider/slider.less, themes/standard/css/components/image_slider, themes/standard/css/components/content.less, themes/standard/css/components/partner.less, themes/standard/css/components/footer.less, themes/standard/css/components/basic.less, themes/standard/css/components/header.less, themes/standard/css/components/navigation.less, themes/standard/css/components/slider.less, themes/standard/css/components/news.less, themes/standard/css/components/horizontal-rule.less, themes/standard/css/components/autonav/bootstrap.less, themes/standard/css/components/autonav, themes/standard/css/components/font.less, themes/standard/css/components/formular.less, themes/standard/css/components, themes/standard/css/styles.less, themes/standard/css/bootstrap.min.css, themes/standard/css, themes/standard/description.txt, themes/standard/inc/header.php, themes/standard/inc/footer.php, themes/standard/inc, themes/standard/page_theme.php, themes/standard/fonts/gewers.svg, themes/standard/fonts/gewers.eot, themes/standard/fonts/gewers.ttf, themes/standard/fonts/gewers.woff, themes/standard/fonts, themes/standard/img/fraesung_gewers.svg, themes/standard/img/gutachten_gewers.svg, themes/standard/img/Gewers_Baumpflege.svg, themes/standard/img/beratung_gewers.svg, themes/standard/img/background-slider-img.jpg, themes/standard/img/pflege_gewers.svg, themes/standard/img/Trennlinie.png, themes/standard/img/faellung_gewers.svg, themes/standard/img/navi_icon.png, themes/standard/img/trennline_punkt.png, themes/standard/img/trennlinie.svg, themes/standard/img/Gewers_Baumpflege.png, themes/standard/img, themes/standard/default.php, themes/standard/js/safeMail.js, themes/standard/js/bootstrap.min.js, themes/standard/js/modernizr.js, themes/standard/js/scripts.js, themes/standard/js, themes/standard

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Apache

# Server API
cgi-fcgi

# PHP Version
5.6.31

# PHP Extensions
bcmath, bz2, calendar, cgi-fcgi, Core, ctype, curl, date, dom, ereg, exif, fileinfo, filter, ftp, gd, gettext, hash, iconv, imap, json, libxml, mbstring, mcrypt, mysql, mysqli, mysqlnd, openssl, pcntl, pcre, PDO, pdo_mysql, pdo_pgsql, pdo_sqlite, pgsql, Phar, posix, Reflection, session, SimpleXML, sockets, SPL, sqlite3, standard, sysvmsg, sysvsem, sysvshm, tokenizer, wddx, xml, xmlreader, xmlwriter, xsl, zip, zlib

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max_file_uploads - 20
max_input_nesting_level - 64
max_input_time - 60
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memory_limit - 384M
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upload_max_filesize - 150M
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mysql.max_persistent - Unlimited
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session.cache_limiter - <i>no value</i>
session.gc_maxlifetime - 7200

Browser User-Agent String

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36