Did the Sample Editor get fixed in Version 6?

Some of us using the Mac version of 5.5 were experiencing an issue in the Sample Editor when using the pencil tool. For instance using the pencil tool to draw out a spike, would actually effect the wrong part of the waveform, making it impossible to draw out a spike.

Now it works fine in N6.
I’m using N6.05 one month ago and it feels very very unstable and very loud for my machine. I’ve returned into N5.5.5. it works great and seems lighter running tan N6.