Notes cut off on exported audio, when using VST instrument

Hello! Hope you're having a great day!
There is some weird behaviour when I'm using my EastWest Bösendorfer 290 VST plugin to play a piano arrangement of mine. When playing back inside MuseScore 4, everything is normal, see "recorded_audio.ogg" which is just a desktop recording that I did with another app. That is how it is supposed to sound.
However, when exporting said audio with any settings/any format, the notes/pedal are cut off early (see "exported_audio.ogg"). I've tried changing all settings in the VST and experimenting, but nothing really influences that behaviour.
Does anybody know why this happens?
Thanks in advance and with regards,
Alvin R. Szöke