Special characters in cue files: shnsplit breaks

I am using the following one-liner to split my flac file with cue sheet into several flac files:

shntool split -f "Album.cue" -o flac -t '%n - %p - %t' "Album.flac"

Problem is: when the title in the cue sheet contains "ç" or "?" the corresponding splitted file seems corrupt, and I cannot listen to it. Of course if I remove the title altogether:

-t '%n - %p'

Files are created without any error.

So, how do I handle those special characters n the cue sheet (that arose with titles, but it could also impact performer's name")