Enum localization problem in M4

[mustafa.cataltepe]

I have enum classes which get their labels from resource bundle and working up to 3.0.M3 so far but when i need to check something in 3.0.M4 today i encountered that labels from bundle are not displayed and default enums displayed instead. Any info about this thing about what have been changed in M4 or is it a defect in the current snapshot?