I edited it. In some browsers, especially phones, a long string can seem infinite. I exaggerated to make the point.
Anyway, Since you have found that Cubase is sending the right data, shall we assume the Behringer device is also? That leaves the Trinity as the culprit.
It does sound like the kind of thing that could go wrong on a keyboard synth. If I were in your position, I’d go ahead and reset it. Since we could not determine the fault definitively, this still might or might not work.
I’ll edit the title to display a bit more info- maybe a Korg Trinity user will jump in here.
Are you saying you record into the onboard sequencer of the Trinity, and then are sending it to Cubase? (not that it matters, I just didn’t understand that detail)
Finally, feel free to edit your title as much as you like, I have increased your permissions for the forum.