Thanks for the detailed report. You were right, v1.0.1 could fail to detect completed replies with the current ChatGPT UI, even though audio playback itself was working.

Version 1.0.2 updates the detection logic to handle several cases found during testing, including ChatGPT rebuilding the composer or changing routes when a new conversation starts, as well as interface languages that were not previously recognized.

I also tested the fix on Firefox/Ubuntu. If the issue still persists on your setup, it may be related to a different ChatGPT UI variant, account rollout, or interface experiment. Version 1.0.2 also adds a Debug mode that can help identify which detection path is being used.

EDIT: glad its working for you now! v1.0.3 - added notification sounds