No way to say "MIDI input none" when some are available.

3.0.5 I've been testing and developing https://musescore.org/en/node/270844 which see. When there are MIDI output devices available, they appear properly under the MIDI output entry in the I/O Preferences sheet. But not so MIDI input -- if there are MIDI input devices available, it will choose one (the only one if there's one) and there is no way to say "none", as there is for output. This is a major problem when you have MIDI loops (natively available on Mac, 3rd party on Windows). It will select the loop device as input, preventing you from using it for output. The workaround on the Mac is to to create a second loop (IAC Driver) device just for this in the Audio MIDI Setup applet, and direct MuseScore MIDI input to it. But that's all poor: MuseScore should have a "none" choice for MIDI input. The seeming theory on which the lack of "none" is based, "what harm is done by choosing one as input?" is obviously disproven.