some notes aren't rendered

[j4k0xb]

Midi: https://anonfiles.com/T3Q9Zf26y7
OS: Manjaro Linux, KDE Plasma

1. Choose right hand & follow you
2. Go to start bar 115

Only C4/G4 are rendered:

But C5 also has to be pressed to continue:

[TryTryAgain]

On my Yamaha 88 key keyboard, I'm not able to get anything higher than F# (I think for 3 more keys it still shows lines when being pressed but not the note letter) from the 3rd octave over from middle C. And anything below C, three octaves to the bass side don't get rendered at all; no lines no notes...so missing the three notes on that side, far less than on the higher octaves.