Final Cut Pro Noise reduction issue

The project size should be whatever size you intend to deliver. In many cases 1080p is fine, but we don’t know what you need or want.

I don’t understand your statement about the image disappearing. Can you show what you see after changing to 1080p?

You haven't answered photo information yet. Please show me a screenshot of the inspector (general).

Q2: What is the detailed information about the photo?

Q5: New library →Will the same phenomenon occur if the same effect is applied to the same photo?

You are editing in a vertical project. Is that what you intended?

If not, then press Command-J, then click Modify and change the project size:

Q1: What version of FCP is it?

Q2: What is the detailed information about the photo?

Q3: What is the inspector information for the effect name?

Q4: What will it look like?

Noise reduction? In a photo?

Please tell us in detail what you were doing, if possible with screenshots.

Is the clip disabled in the timeline? Is the noise reduction set so high that it affects the entire image?

What happens after setting the project to 1080p if you uncheck Noise Reduction, and Color Correction? Can you post a screenshot of that?

Would it be possible to share the still using Dropbox or WeTransfer?