Midi files from application make midi-sequencers breakdown

[Tortra]

So I was trying to edit one of the midis I had gotten exported from the application, but when I try to edit the midi via online or in apps (caustic, MidiEditor, Onlinesequencer.net), and all have this fairly annoying issue in where the notes either don't show up, barely play at all (very faint, toned clicks), or are uneditable (Onlinesequencer.net and Caustic both have this issue in where I cannot select these notes that the app has exported, meaning I still have to re-write the entire midi based on hearing it along from the app itself.) examples of the issue are in the images

I don't know if this is intentional or if there's a fix, help would be greatly appreciated

[helderduartemop]

I also have the same problem, what parameter do you change in the code in order to produce longer notes? And is it only at composer.py or other files may require the change?