Strange transparent and Anti-Aliasing effect

I’ve met a few strange problems when using Cesium’s new feature: MSAA. I made a live demo
Now I have two questions:
Q1: When I enable log Z buffer, some strange lines appear:

after disabling log Z buffer, it looks good:

Can someone to explain this?
Q2: Construct Viewer with orderIndependentTranslucency: true, the glasses look like this color:

with orderIndependentTranslucency:false, they look like another color:

Is this the same problem in 4170 ?
Looking forward to your help!