Until this issue is fixed you can try using it in KV Element
Free Plugin Chainer Element + BB VST3 Support + More Midi Tracks Win\Mac
load KV ElementVST i or FX into a Cubase track, now drag and drop
Band-in-a-Box DAW VST3 Plugin.vst3
into it and hook up the audio and midi in/out, then click the EXT up in the top left to sync.