Thought it was a bug with the WaveShell at first but Auto-tune EFX 3 (which is only offered in VST3 format) also reverts back to its default state when re-opening a project.
macOS Sierra 10.12.5
FLStudio Beta Candidate 1.41 ...
They only discovered their bug due to the "unusual" way FLStudio loads VST3 plugins. Other DAWs work correctly.
Can you please check this again? Ableton Live works just fine, but I don't like it for quick jams.
Best. ...