System Information
Operating system:

iMac (Retina 5K, 27-inch, Late 2015)
10.14.4 (18E226)
3,3 GHz Intel Core i5
32 GB 1867 MHz DDR3

Graphics card: MD Radeon R9 M395 2 GB

Blender Version
latest, 2nd May

Short description of error

Firstly, I've seen some changes in the Header it feels me so weird. It's not smooth in workflow in some way:

When you're working with vertex paint you can't work as easy as before. This is another example from some older version (early March) clicking on right button mouse:

This is now: (? no color either, no shortcut)

Another thing I don't know it will be fixed or included, when you're working on solid/workbench from the viewport and you're changing some parameters to render in workbench it has not response into blender options :( I must work twice on it, it has no sense, right? I don't know if it's a bug or not, I told it to Pablo Vázquez some week ago and he think it could be.

I hope those features are going to fix in some step in your development. It seems too obvious to me. The workbench engine seems incomplete in that way.

Thanks for you attention.

Regards.
Joan