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[Bug]: Azerbaijani (az-AZ) Speech Translation fails when configured as both source and target language

bugSomething isn't workingSomething isn't working

Status: Open.

#1028 In microsoft/cognitive-services-speech-sdk-js;

· Rohit Shaw (rohit1coding) opened on Jul 23, 2026

Document supported locales and fallback behavior for semantic segmentation

bugSomething isn't workingSomething isn't working

Status: Open.

#1009 In microsoft/cognitive-services-speech-sdk-js;

· reg31 opened on May 4, 2026

[Bug]: speechConfig.setProxy stopped to work starting from nodejs v22.x.x

bugSomething isn't workingSomething isn't working

Status: Open.

#1007 In microsoft/cognitive-services-speech-sdk-js;

· Leo Moll (tuxpoldo) opened on Apr 28, 2026

[Bug]: Browser: SpeakerAudioDestination.pause() and .mute() do not always pause or mute synthesized audio

bugSomething isn't workingSomething isn't working

Status: Open.

#1000 In microsoft/cognitive-services-speech-sdk-js;

· Matt Flaschen (mattflaschen) opened on Mar 31, 2026

Use PropertyId for "MICROPHONE-WorkletSourceUrl"

Status: Open.

#990 In microsoft/cognitive-services-speech-sdk-js;

· Matt Flaschen (mattflaschen) opened on Mar 17, 2026

Option to load Timeout Worker from separate JavaScript file, instead of inline base64

Status: Open.

#989 In microsoft/cognitive-services-speech-sdk-js;

· Matt Flaschen (mattflaschen) opened on Mar 16, 2026

OGG_OPUS (and other compressed formats) crash with RuntimeError — privHeader never set in AudioStreamFormatImpl constructor

Status: Open.

#981 In microsoft/cognitive-services-speech-sdk-js;

· Raghuram Kannan (raghuram-rng) opened on Mar 5, 2026

[Bug]: Unable to contact server. StatusCode: 1006, <endpoint> Reason:

bugSomething isn't workingSomething isn't working

Status: Open.

#980 In microsoft/cognitive-services-speech-sdk-js;

· keithyipkw opened on Mar 4, 2026

[Bug]: Speech to text service hallucinations

bugSomething isn't workingSomething isn't working

Status: Open.

#978 In microsoft/cognitive-services-speech-sdk-js;

· Jarco Uil (Jarco-Uil) opened on Feb 9, 2026

[Bug]: Azure Speech TTS (nl-BE-DenaNeural) drops plosive consonants in sentence context – model regression?

bugSomething isn't workingSomething isn't working

Status: Open.

#974 In microsoft/cognitive-services-speech-sdk-js;

· specialspeak opened on Feb 6, 2026

1 Pronunciation of most/many english Voices for 'maketh'; and 2 poor audio quality in “Microsoft William Online (Multilingual) – en‑AU”

Status: Open.

#973 In microsoft/cognitive-services-speech-sdk-js;

· Michael Daniel (MichaelDBowles) opened on Feb 3, 2026

[Bug]: MissingBreak/UnexpectedBreak from prosody having broken Confidence values, broken detections.

bugSomething isn't workingSomething isn't working

Status: Open.

#971 In microsoft/cognitive-services-speech-sdk-js;

· enzoferrari1 opened on Jan 17, 2026