Large images fail to be read when attached via drag-and-drop or file picker (but work with Cmd+V paste)

[Imane-Idrissi]

When attaching an image with large pixel dimensions via drag-and-drop or file picker, the agent fails to read it. Cmd+V paste works fine with the same image

Tested drag-and-drop and file picker with the same large image across multiple models:

• Sonnet 4.6, Opus 4.5, Opus 4.7: The initial read fails, but the model sometimes resizes the image itself as a workaround before reading it.
• However, this behavior is inconsistent :in some prompts the model just reports it can't read the image and doesn't attempt to resize it, until explicitly asked to.

App version: 0.48.47

[Imane-Idrissi]

Note: This issue does not reproduce in dev mode. All three paths (paste, drag-and-drop, file picker) work without errors.