playAdditive not working after upgrade to 1.5.0

I’m trying to play two or more animations simultaneously but the second one stops the first even using playAdditive method. In 1.4.0 works no problem but when i upgraded to 1.5.0 this issue appeared.

As far as I know, 1.5 came with many unexpected bugs and the dev team is already working on 1.5.1. Try the latest beta here: http://forum.cocos.com/t/cocos-creator-v1-5-1-5-26-beta-2/46860