Java watch sometimes work, sometimes won't

What would cause variable watches to sometimes show you the value and sometimes printing Name unknown: xxxxx?

This is an intermittent problem too.

Hi Richard,
I sorry that this is a known issue. we would fix it in future release.

This is quite an important feature.
Do you have an ETA when this is going to be fixed by any chance?
Is there a web page where we can follow the development?

I am sorry, there is no such way currently.