There seems to be a bug in the DynaVerb algorithm: when switching to the Omnipressor mode, reverb remains audible. However, when a preset is saved and recalled again, Omnipressor works as expected.
It also seems to be the same problem the other way around, when switching back to reverb mode.
This is intended behavior. The Position, Diffusion, and EQ controls are disabled for the Vintage Plate Algorithm because they were not present in the original SP2016 Algorithm.
We’ll update the documentation to make this clearer, thanks for bringing this up.