Image generation only produces 1 output + editing fails

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Hello, I’m experiencing repeated issues with image generation on LMArena in the past days:

1. When I upload a photo, the model only generates one output image, even if the prompt or model previously produced multiple variations.
2. After generating the first image, editing no longer works. Any attempt to edit or re-generate triggers an “Error” message.
3. Some images load only partially and go into infinite buffering, or the generation fails immediately.
4. This issue didn’t exist before — the same models (especially Nano-Banana / Flash) used to create multiple variations with no errors.
5. I tested different browsers, devices, new chat sessions, and clearing cache. The issue persists, so it seems server-side.

Models affected:
- Nano-Banana
- Flash image editing models
- Possibly others

Steps to reproduce:
1. Start a new chat
2. Upload a photo
3. Generate
4. Attempt to generate more than one image or edit the output
5. Error appears consistently

Expected behavior:
Multiple image variations and successful editing (as previously available).

Actual behavior:
Only one image generated; further edits or generations fail.

Thanks for checking this — the issue appears to be server-side and consistent for many users.

No source file or test is identified in the report. Start by reproducing the upload, generation, and editing steps in a new chat, then trace the server-side path for Nano-Banana and Flash image models. Done means multiple image variations can be generated, edits succeed, and images no longer fail or buffer indefinitely.

Written by the indexing model from the issue text.