MIDI Input activation in Standalone

There is something that bugs me forever and that I could not find a way to handle. When I run a plugin in Standalone and I forgot to turn on the MIDI keyboard controller before the program launched and I switch it on, when it is running, I always have to activate the MIDI input manually in the audio setup dialog. I had the input active before, so I would expect that the input is activated as soon as the device comes online. The device itself is detected and it shows up in the list, but it is inactive. Can I do something about this workflow bump ?