Midi keyboard polyphony bug in musescore 4

There seems to be a low polyphony limit (4 notes) when playing on a midi keyboard on musescore 4. This could be a decision but I submit this as a bug because musescore 3 works perfectly without a perceivable limit.

I use musescore for online classes and it is very useful for me to show things live on the keyboard using the piano keyboard panel. So I'm sticking to musescore 3 for now.