It´s sometimes quite nerving, i.e. with a faceplate if you click on a control, it´s opening the GUI...
If you want to delete a plugin, which is not selected, it´s opening first the GUI
In general, I like the double click to open the GUI better, but this means, that the GUI doesn´t automatically open when inserted a new instance (btw why???), which I like just because it´s a good indicator when the plugin has loaded completely (good for some VST, which have longer loading times...)
Problems over problems....
