Adding rests using a MIDI Keyboard - Musescore 4

I use my MIDI keyboard to enter notes in musescore. In musescore 3, I could assign a note to rest (the equivalent of 0 on the computer keyboard. I would then use other midi notes to duration and use them in the same way as on the computer keyboard i.e. typing the note value then rest.

The same thing doesn't seem to work in musescore 4. The midi assign to rest toggles rest on the screen but doesn't enter a rest on the part. It just toggles on and off...

For example, pressing 2, 0, 3, 0, 4, 0 on the computer keyboard enters half rest, quarter rest, eighth rest

the same using my midi keyboard (which used to work in MS3) enters nothing. just a sequence of toggling note durations and rest. If I enter notes instead of rests, it works exactly as in MS3.