Midi events affect playback of score even when the midi input device is set to "no device"
S4 - Minor
Actual MuseScore version: OS: Windows 10 Version 2009, Arch.: x86_64, MuseScore version (64-bit): 4.0.0-223472200, revision: 5485621
1) Set midi input to "no device" in the preferences
2) With a score loaded, play the score and as it is playing press some midi keys
3) Some notes from the midi will be heard both as they are played and when replaying the score and the play cursor might move erratically.
4) However, these extra notes are not shown on the score and if the score is saved and loaded again the extra notes are not heard on playback.