Hmm... I could reproduce it with iZotope Nektar elements. Is that also wave plug-in? Or do they have similar bug by "coincidence"?
Also for me, it case I just select "Global bypass" and one control in "ACT Learn" mode, after I press again "ACT Learn", it asks "One control and one parameter...", but "Ok" does not revert to normal mode ("ACT Learn" is still highlighted"). As I understand how all that works correctly, that process should not be influenced by VST at all. I mean, in case it is possible Automate some parameters, it should be possible ACT map it. The "magic" is happening in SONAR.