Possible bug: transcription switching to wrong language despite fixed language setting

Hi Vowen team,

I wanted to mention something I've noticed a few times, not sure if it's a bug or something I'm misconfiguring.

I'm using Vowen with Groq and OpenAI o4 mini for transcription, with a specific language set in the preferences (not "auto detect"). Most of the time it works fine, but occasionally the transcription switches to a completely different language — I've seen Cyrillic pop up a couple of times, and once or twice something else entirely.

It tends to happen in two situations:

• With short phrases, where it seems like there isn't enough audio context to stay on track

• Randomly in the middle of longer transcriptions — so the first part comes out correctly, and then a chunk somewhere in the middle suddenly switches language before going back to normal

It's not super frequent, but noticeable enough that I figured it was worth flagging.

My guess is the underlying model might be doing its own language detection at some point regardless of the setting, but I'm not sure if that's by design or not.

If there's something I should configure differently, happy to try. Otherwise, hopefully this is useful feedback!