ROLI NOISE AUv3 crash in Juce PluginHost on iOS

Master branch:

  1. Open ROLI NOISE Drums AU in PluginHost
  2. Connect MIDI input and audio output - NOISE Drums works fine.
  3. Open plugin GUI and go to performance section (where there is a 4x4 button UI)
  4. Press a button - CRASH.
  5. Strange observation: once it crash, somehow PluginHost plays a direct input-to-output-audio, even though no input audio it connected.

Hope you Roli guys could take a look at this.
Other AUv3s crashing as well and I suspect it has to do with OpenGL state.