Pattern on Tiff Image After Cropping and Rotating

[niruF]

Running AI 29.1 on macos (Sonoma 14.6.1). 

I can take an image and import it into AI without issue (See Original.png)

I can rotate the image (See Rotate.png) or Crop the image (See Crop.png) without issue. 

The moment I crop and rotate the same image I get some pretty bad artifacts on the image that persist after exporting the image as a png or as a pdf (See Crop and minor rotate.png and Crop and Major Rotate.png)

Any way to prevent this issue and or how to fix it would be greatly appreciated. I need to be able to crop and rotate the image so skipping one of these steps is not an option.   

Best, 

[niruF]

Here is a more obvious example of the artifacts on the image.  See the rotate square boxes appearing on the image. 

 

[niruF]

Example without artifacts. 

 

[Ton Frederiks]

Do you keep the resolution and scale the same?

[niruF]

Nope, during the process of cropping and rotating I am not changing the scale of the photo. 

[Ton Frederiks]

I cannot reproduce that. I rotated your image, made a copy on top, cropped it and used difference blending mode to show any differences.

[niruF]

Okay, thank you for trying. I could reproduce it in the following AI file when doing a rotation followed by a crop but not when cropping followed by a rotation. I have been able to get the artifacts when doing both orders before so. 

[niruF]

Can not upload a .ai file here..... Here is the .eps file.

[niruF]

Also, for me at least, multiple rounds of cropping/rotation really imp acts the image. 

[Ton Frederiks · Accepted solution]

Thanks, I can reproduce it now. Seems like Illustrator does not handle resampling as good as Photoshop.

I would use Photoshop for this or in Illustrator, use a clipping mask instead of crop.

[niruF]

Got it, that is what I just started to do as an alternative. Thank you again very much. It is greatly appreciated. 

[Ton Frederiks]

Good to hear you have a workaround. You may want to report it here where the Illustrator engineers are watching:

https://illustrator.uservoice.com/

[niruF · Accepted solution]

Seems to be a known issue:

https://illustrator.uservoice.com/forums/601447-illustrator-desktop-bugs/suggestions/46526032-rotati...

No fix implemented yet in Illustrator but can be done in photoshop. 

[Ton Frederiks]

Just voted.