[BUG] Multi-port midis broken sometimes

[spessasus]

Description Wrong instruments play sometimes This has been an issue since i've added midi port support

Reproduction steps Steps to reproduce the behavior:

1. Africa.mid
2. If i skip the time or go back to the beginning, it fixes itself???

Expected behavior Work without changing time

MIDI files and SoundFonts n/a

Desktop (please complete the following information):

• OS: any
• Browser: any

Smartphone (please complete the following information):

• all

Additional context n/a