Known issues with streamObject since yesterday? Not returning anything

Hi, since yesterday, with no changes on my API code, streamObject started returning no chunks in partialObjectStream.

Current behaviour: Since last night, streamObject returns no chunks in partialObjectStream 9 out of 10 times (more or less)

If I retry this call 10 times, it will usually work 1 out of 10 times (when was working 10/10 until last night) so I wonder if there are any recent known issues with streamObject?
I have tried changing the model (tried groq and mistral) and this happens with both, which makes me think it's something with streamObject.
streamText works fine.

Can reproduce in production, local and preview environments.

Expected Behaviour: To be able to iterate through the chunks in partialObjectStream as it was working until yesterday. Nothing was changed in my code.

Code:

1const { result: metadataResponse, responseTime: metadataTime } = await retryApiCall(() => streamObject({2                model: metadataModel,3                system: <System Prompt>,4                prompt: <Prompt>,5                temperature: 0.7,6                top_k: 50,7                top_p: 0.9,8                maxTokens: 1500,9                schema: z.object({<ZOD SCHEMA>}).required()10            }), "metadata");1112            const { partialObjectStream: metadataResponseStream, usage: metadataUsage } = metadataResponse;1314            let chunkCount = 0;15            metadataContent = {};16            17            for await (const chunk of metadataResponseStream) {18                ++chunkCount;19                controller.enqueue(new TextEncoder().encode(JSON.stringify({ type: "metadata", content: chunk }) + "20"));21                metadataContent = { ...metadataContent, ...chunk };22            }2324            if (chunkCount === 0 || Object.keys(metadataContent).length === 0) {25                throw new Error("No metadata was generated");26}

1Environment (local, preview, production): can reproduce in all 32Frameworks: Node 20, Nextjs 14.2.13