i am running tts sherpa-onnx in unity (c#), i am having a problem where in the shorter sentences the generated audio tends to add extra audio containing gibberish at the end..

example long sentence (works fine) : "Bonjour monsieur, comment allez-vous aujourd’hui ? J’espère que vous passez une excellente journée !"
audio file: long sentence example

example short sentence (adds gibberish at the end): bonjour monsieur
audio file: short sentence example

in these examples i used umpc voice for french, but the same issues exists on other models.
for example on the libritts_r model when you generate "hello sir" it works, but when you generate "hello" immediately after it, it adds the previous text sometimes or part of it "hello sir" or "hello si".