I'm sorry to report something so deeply weird, but yesterday I installed the FB 4.5 trial and afterward my application, which is built in FB 4.0, got flipped horizontally. Here's a screenshot in case you don't believe me.
I uninstalled Flash Builder 4.5 and the problem remains. Any ideas?
In some configs, the layoutDirection property is not getting set to "ltr".
See past discussions about layoutDirection.
In case any of Adobe's other customers find this through Google, before you get frustrated by Adobe's awful customer support for sending you to Google instead of providing a direct link to the answer, here is the answer:
Add the following as the first child element to your <s:Application>:
@namespace s "library://ns.adobe.com/flex/spark";
@namespace mx "library://ns.adobe.com/flex/mx";
I think the link that the support professional wanted to provide is http://stackoverflow.com/questions/5019870/intermittent-right-to-left-mirroring-of-ui-and- text .