Resizing a UI panel works normally until it makes the image be a minimal size(?) then it keeps expanding toward the outside of the window, past the window size

Is there an existing issue for this?

• I checked and did not find my issue in the already reported ones

Describe the bug

Cf. title

Steps to reproduce

1. Open an image
2. Grab the right panel's resize bar
3. Drag it to the left

Expected behavior

Image should keep getting smaller

Logfile | Screenshot | Screencast

https://github.com/user-attachments/assets/058d6dcf-a18c-471f-a40f-51d10dae07c4

Commit

No response

Where did you obtain darktable from?

darktable.org / GitHub release

darktable version

5.0.1

What OS are you using?

Windows

What is the version of your OS?

10

Describe your system

16G, Win32, GTK+ 3.24.43

Are you using OpenCL GPU in darktable?

Yes

If yes, what is the GPU card and driver?

No response

Please provide additional context if applicable. You can attach files too, but might need to rename to .txt or .zip

Can you reproduce with another darktable version(s)? I tried 4.0.0 and 4.2.1 and neither started so who knows
Can you reproduce with a RAW or JPEG or both? this is a PNG i think
Are the steps above reproducible with a fresh edit (i.e. after discarding history)? yes
Is the issue still present using an empty/new config-dir (e.g. start darktable with --configdir "/tmp")? yes
Do you use lua scripts? no
What lua scripts start automatically? idk
What lua scripts were running when the bug occurred? idk

Reproduce on Windows 10 with darktable 5.0.1 using the reported right-panel resize steps, a PNG, and a fresh configuration directory. Start by tracing the desktop UI handling for the right panel's resize bar after the image reaches its minimum size. Done means dragging left continues to make the image smaller instead of expanding the panel beyond the window.