When resizing a VST3 plugin into bitwig (OSX Sierra, Bitwig 2.1.1)
the UI is not resized as expected, but the window is increased in size, with top left position of the UI offset (downward in my example bellow).
Simple reproduction scheme by using Juce Audio Plugin Demo and call alternatively resize
Furthermore, in latest Ableton Live with AU, it does a similar thing : it somehow āanimateā (with flicker) the resize with the same weird topleft offset, then finally repaint normally, once the resize animation is done.
Very unelegant :
and more specifically by the call to updateWindowSize() in EditorCompWrapper::resized()
to reproduce, resize the plugin by dragging the bottom right-corner during a couple of second, and you should get the plugin painted with a Y offset or even a fully blank window