Randomly (although usually around the time content is edited), Omega will stop changing the classes to have a double-hyphen in (eg field--name-field-body) which causes the CSS to not apply properly and make the site look terrible.

The issue is not with Omega but with the mailsystem module (it's possible another module causes this too but in our case it was mailsystem). There is a patch in the mailsystem module issue queue - https://drupal.org/node/2051135#comment-7757425 - which fixes the issue.

Comments

dddbbb’s picture

I just experienced something very similar to this but am not using the mailsystem module. I had a file_entity field (a text field to be used as an image caption) just randomly change from using field--name-whatever to field-name-whatever.

Any tips on how to go about debugging this? I've read the issue linked above but am none the wiser.