Models can seemingly degrade over time.
The following scenes were created with the same prompt and the same model, @GoogleAI's Gemini 3.8 Flash, by a user on DesignArena.
The first was generated just 3 days after release, while the second came almost a month later.
The difference is striking. The first scene features a finished bungalow with terraced gardens, while the second is barely recognizable.
Digging into the code, we find that the second scene still attempts to build the garden, windows, and patio, but buries much of it beneath its own terraces.
In aggregate, the share of objects never visible on camera jumps from 18% to 57%. For bushes, the share placed underground jumps from 0% to 100%, and even the house walls go from fully above ground to 64% below it.
Both scenes share the same simple user request, yet a few weeks after release, the model struggles to fulfill it. Try making your own generations and judge for yourself at http://DesignArena.ai!