[Unity 5.2.2] Bug with Write Defaults in animation states

Just installed Unity 5.2.2 and i’ve noticed a bug not present in 5.1.1 which i used until yesterday: if i turn off Write Defaults in an animation state, it behaves like it is active.

I have some animations, each of them enables/disables an Audio Source component without touching the other AudioSources, so if another AudioSource is playing it must not be stopped and vice-versa.
For this purpose i have set Write Defaults off, because i want to prevent them from restoring all the sounds to initial state.

This worked well until yesterday and i have not made changes to the project…
Is this a bug and i need to wait next release?

I’ve just submitted a bug report with my project.
If someone wants to check out my project, please provide me with your email so that i can let you access it via Dropbox,

Anyone experiencing this issue or am i the only one?