A possible workaround (at least for the volume) if you are using different presets for different instruments, until this gets addressed by neural, would be to place a gain block at the start of your presets that you set to compensate your different instruments output levels. Another would be to just build your presets while leaving the input at 0 (the amps are all modelled to take the input level as a real amp would when input gain is at 0) all the time and just compensate within the preset by using amp or output volume (long press the output). If you are using the same preset with different guitars that would of course not be a solution.