Panned stereo output when using waves plugins

Anytime i try to use an waves VST the output of the vst is panned to the left, even using stereo output VSTs where you can clearly see two outs.

It happens with certain plugins, and Waves are one of them.
I’ve gotten around this by using Blue Cat Patchwork, and placing the Waves plugins inside it.

Thanks Ed, i’ll give it a look.
Any response from the developers in regards of this issue?

Nothing that I can tell. I know there are quite a few posts from last year regarding known issues of Waves VST’s, but I don’t know if this specific issue was among the known issues.