Canvas_size doesn't work after uploading image

Describe the bug

We are working on a simple annotation tool, using your image editor. We specify canvas_size = (612, 612) and at first everything is okay. However after uploading an image, the canvas shrinks down if the image is too small. The canvas size doesn't matter anymore. We are able to kind of fix it with custom css, but it is messy and uncomfortable to have another redundant file just for this. (The right panel components are invisible at first and when picture is uploaded, they appear) I spent quite a lot of time trying to figure this out, I couldn't find a better solution.

Have you searched existing issues? 🔎

[X] I have searched and found no existing issues

Reproduction

import gradio as gr

...

def create_interface(self, img = None, force_light_mode:bool = True, **kwargs):
        kwargs["img"] = self.img
        with gr.Blocks(theme = QimTheme(force_light_mode=force_light_mode), title = self.title) as gradio_interface:
            gr.Markdown(F"# {self.title}")
            self.define_interface(**kwargs)
        return gradio_interface

def define_interface(self, **kwargs):
        img = kwargs["img"]
        brush = gr.Brush(
                colors=[
                    "rgb(255,50,100)",
                    "rgb(50,250,100)",
                    "rgb(50,100,255)",
                ],
                color_mode="fixed",
                default_size=10,
            )
        with gr.Row():
            with gr.Column(scale=6):
                img_editor = gr.ImageEditor(
                    value=(
                        {
                            "background": img,
                            "layers": [Image.new("RGBA", img.shape, (0, 0, 0, 0))],
                            "composite": None,
                        }
                        if img is not None
                        else None
                    ),
                    type="numpy",
                    image_mode="RGB",
                    brush=brush,
                    sources="upload",
                    interactive=True,
                    show_download_button=True,
                    container=False,
                    transforms=["crop"],
                    layers=False,
                    canvas_size= (612, 612),
                )

            with gr.Column(scale=1, min_width=256):

                with gr.Row():
                    overlay_img = gr.Image(
                        show_download_button=False, show_label=False, visible=False,
                    )
                with gr.Row():
                    masks_download = gr.File(
                        label="Download masks", visible=False,
                    )

Screenshot

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Logs

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System Info

Gradio Environment Information:
------------------------------
Operating System: Linux
gradio version: 4.37.1
gradio_client version: 1.0.2

------------------------------------------------
gradio dependencies in your environment:

aiofiles: 23.2.1
altair: 5.3.0
fastapi: 0.111.0
ffmpy: 0.3.2
gradio-client==1.0.2 is not installed.
httpx: 0.27.0
huggingface-hub: 0.23.4
importlib-resources: 6.4.0
jinja2: 3.1.4
markupsafe: 2.1.5
matplotlib: 3.9.0
numpy: 1.26.4
orjson: 3.10.5
packaging: 24.1
pandas: 2.2.2
pillow: 10.3.0
pydantic: 2.7.4
pydub: 0.25.1
python-multipart: 0.0.9
pyyaml: 6.0.1
ruff: 0.5.0
semantic-version: 2.10.0
tomlkit==0.12.0 is not installed.
typer: 0.12.3
typing-extensions: 4.12.2
urllib3: 2.2.2
uvicorn: 0.30.1
authlib; extra == 'oauth' is not installed.
itsdangerous; extra == 'oauth' is not installed.

gradio_client dependencies in your environment:

fsspec: 2024.6.1
httpx: 0.27.0
huggingface-hub: 0.23.4
packaging: 24.1
typing-extensions: 4.12.2
websockets: 11.0.3

Severity

I can work around it

gradio-app / gradio