McDSP resize crashes host

With the new McDSP 6.x (VST3) plug-ins… which have a scalable UI… if you try and adjust the size using the JUCE Host (or Tracktion 7)… it crashes. I don’t see this using other hosts though.

If it helps I’ve tracked it back to JuceNSWindowClass::constrainFrameRect() but I can’t trace farther back since the plug-in is protected and I can’t run it under a debugger. I have contacted the developer to see if they can assist me… Tracktion isn’t in their target list – and it works in the all the major hosts.