I have records in "error_log" file:
PHP Warning:  Invalid argument supplied for foreach() in /administrator/components/com_content/models/article.php on line 486
Edit an article in front-end.
Setting Value
PHP Built On    Windows NT 6.1 build 7601 (Windows 7 Ultimate Edition Service Pack 1) i586
Database Version    5.5.25
Database Collation  utf8_general_ci
PHP Version 5.3.13
Web Server  Apache/2.2.22 (Win32) mod_ssl/2.2.22 OpenSSL/1.0.1c PHP/5.3.13
WebServer to PHP Interface  apache2handler
Joomla! Version Joomla! 3.3.6 Stable [ Ember ] 01-October-2014 02:00 GMT
Joomla! Platform Version    Joomla Platform 13.1.0 Stable [ Curiosity ] 24-Apr-2013 00:00 GMT
User Agent  Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.111 Safari/537.36
| Status | New | ⇒ | Information Required | 
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One more information.
I switched on reporting of all errors in my local server. I edit my "php.ini" and write: "error_reporting = E_ALL"
That is my standard setting. Did you try with the current staging branch?
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After several weeks with no response I am closing this - it can always be reopened if the requested information is provided
| Status | Information Required | ⇒ | Closed | 
| Closed_Date | 0000-00-00 00:00:00 | ⇒ | 2015-03-14 10:57:46 | 
| Closed_By | ⇒ | brianteeman | 
I can not reproduce that problem using the current staging branch. Can you retry with 3.4.0-Beta3 or the current staging branch?