required attribute not applied

[jonathanmcnamee]

I'm getting an issue where server side [required] validation works fine but client side never kicks in. I've looked at source and the required attribute is never emitted - has something regressed? When I add the required attribute using firebug manually it fires as normal

[DmitryEfimenko]

sorry for the delay with response.
There were no changes in that area that I can recall.
Could you show me a piece of code? Or better yet, send me a sample project showing the issue?