Can't minimize WaveLab with Plugins open

In WaveLab Pro 10.0.30 (build 116) I can not minimize WaveLab (by clicking on - in the right upper corner) when PlugIns are open. The whole Window blinks and stays open. When I close the PlugIns (but keep them loaded) I can minimize WaveLab. This was no problem in previous versions. It happens on all PlugIns, so I think it is not a PlugIn problem. Is this a bug? Thanks

I experience similar and this remains a hiccup in the usual workflow I use. The only workaround I’ve found is to use the plugin chain window and then close this before minimising.