SCUMM: COMI chapter screens end too early

[GermanTribun]

System: Windows 10 x64
ScummVM: Newest 2.7.0git
Game Version: German CD

I did notice an issue with the chapter screens, in that they end too early, before the music is actually done. That is already annoying at the start of the first chapter, but even worse at the start of the second, where it delays the music (the harp) that is supposed to play during Guybrush's reaction to Elaine's transformation.

EDIT: I also checked and noticed that pressing Esc to skip the chapter screen doesn't end the music, even though it should, thus overlaying it over the next scene.